sig

Strike Modular Chassis (SMC)

  After using the Strike Industries Strike Modular Chassis for the Sig P320, I am finally letting you know my thoughts. The Strike Modular Chassis - Alpha series, or SMC for short, is made to drop in your Sig P320 fire control unit and slide. This gives you a more controllable platform with a bunch of different accessory options. 

  In the box with the Alpha series Strike Modular Chassis are a bunch of other accessories. You may or may not choose to use them, but they are there. Of course there is the Alpha series SMC. But along with the SMC is an optics platform, a side charger adapter, a set of gray grip panels, and an angled front grip that also will hold an extra magazine. Various screws and allen wrenches are also included to install all that stuff. There are also some added bonuses. Like a mini figure SMC for those brick toys, a SMC patch, and a SMC pin. Those little add-ins are pretty cool.

  I’ll try to explain the SMC to you, but the pictures may explain it better. It is machined from 6061-T6 aluminum, so it’s not your Grandma's plastic grip. As it sits, it looks like a pistol frame with an extension running off of the back. The extension has some QD’s on it, along with a vertical picatinny rail for attaching stuff, like a pistol brace, when they become legal again. Along this extension is also where the raised optic platform mounts. Up front is a standard picatinny rail section for attaching lights or the supplied angled foregrip/extra magazine holder. Oddly enough, there is also a hole through the front pic rail which is used to mount compensators, more on that later. 

  At first, I dropped my P320 FCU and a full length 4.7” slide into the Strike Modular Chassis. The FCU slid in pretty easily, but still fit snug. This slide had an optic already mounted to it, so I left it for the time being. I also installed the charging handle on the rear of the slide. One basically swaps out the backplate and then screws the charging handle on, on whatever side you want to use it on. Strike Industries also sent me their Dual Folding adapter, or folding brace. So I installed this on the rear pic rail. This was before using a brace was a problem. I also installed the foregrip. I shot it a while in this configuration. I might mention that where the rear pic rail is on the SMC, it has a “U” shaped cut-out, so you can see your iron sights or slide mounted red dot easier. While using this config, I did notice that the changing handle rubbed a little bit on the side of my optic. The charging handle moves with the slide, so it doesn't rub along the optic, it just rested up against it, causing the vibration of the firearm to rub a little wear mark in the side of the optic. The charging handle really did make it easy to cycle the slide, I can see why Strike Industries now offers it as a stand alone product. Other than the rub mark,  I was pleased with how the SMC was working.

  After a bit, Strike Industries sent out some more accessories to attach to the SMC. They sent the Magwell, Blast Shield, and 2 compensators. I immediately installed the Magwell as it makes reloads easier. I also installed the Blast Shield. The blast shield mounts up on the front pic rail. It gives the slide some “shields” to keep muzzle blast at bay. It also protects your hands when using one of the compensators. The Blast Shield has a lower pic rail also, so rail attachments can still be used, they just sit slightly lower on the firearms frame. I couldn’t immediately install the comps, because I needed a carry length slide with the 3.9” barrel. Zaffiri Precision was kind enough to help me out with one so that I could use the compensators.

  The compensators come in two sizes, a Small and Large. The Large one has more mass and more ports, but it also is longer so it sticks out past the blast shield or dust cover. The Small comp is flush with the blast shield and barely sticks out past the pistols dust cover. Both of these comps are for non-threaded barrels only. This makes the comps 50 state legal. The comps come with a screw to mount them. They mount through the SMC’s dust cover in that previously mentioned hole. Just slide the comp into the SMC and tighten the screw. These comps will only work with the SMC and a 3.9” slide/barrel. I tried out both the comps and really liked them. The Large version seemed to reduce recoil and muzzle rise better than the Small one. But don’t get me wrong, the Small comp still did an excellent job, the Large one just worked a bit better. I would choose the Zaffiri compact slide and Small comp combo when the SMC is configured as just a stand alone pistol. 

  The Strike Industries SMC doesn’t come without problems. Since the SMC is a modular style chassis, it screws together in places. Mainly where the backstrap slides in. At the top, there are 2 tiny screws to hold it in place. These 2 screws loosen up and can strip the frame holes out. Strike industries now says to use “red” loctite 272 on these. They still loosened up on me and one of the screw holes completely stripped out. Luckily it was on the side where a longer screw can go. So I put a screw with a nut on it and it works fine now. Once I figure out which backstrap I want to permanently use, I will be doing something semi-permanent. So if you get one of the SMC’s, use a red threadlocker on these screws and check the tightness of them after every use. The backstrap, where the web of your hand meets it, is flat. This flat makes the pistol rub your hand a bit. If Strike Industries were to round this out, the SMC would be way more comfortable in your hand, especially after a day of hard use.

  When I switched to the compact slide and compensator, I also started using the raised optics mount. The raised optic mount has mounting holes for just about any mini or micro pistol red dot, like an RMR, Shield, etc. The red dot mounting seems pretty high when you look at it, but when you are using it, it works well and doesn’t seem too tall. I really like how it has the ability to mount just about any optic.

  The Strike Modular Chassis is a unique addition to your Sig P320. It gives you abilities that the stock P320’s don't. The fixed, non reciprocating optic mount works well. The compensator options are great. Having an angled front grip that houses an extra magazine is very useful, especially since you can put a 30 rounder in it. The screws that strip out are a big downer for me. But as a whole, the Strike Modular Chassis is a fun and useful addition to a Sig P320.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Chassis system for Sig P320 handguns

Target Market:

Those wanting to convert their Sig P320 into a pistol caliber carbine or SMG style pistol

FNBs (Features & Benefits of this product):

SMC ALPHA BASE:

  • Over 20+ configurations

  • Included Ambidextrous Side Charging Handle with Slide Cover Mount

  • SMC Rear Module Backstrap 

  • SMC Multi-Optic Mount (Footprints: C-More, DeltaPoint Pro, Docter/Noblex, RMR, Shield and all SIG SAUER Open Reflex Sights)

  • Ambidextrous QD sockets located on SMC Rear Module Backstrap

  • Picatinny rail located at front bottom of chassis and on Rear Module Backstrap for accessories

  • Spare Magazine Holder for SIG SAUER P320 with SI Modular Magazine Release is included

  • Uses SIG SAUER P320 OEM fitment takedown lever and P320 magazine release, SI Modular Magazine Release is pre-assembled and included

  • Machined from 6061-T6 aluminum

SMC COMPS: For use with 3.9” slide and non-threaded barrel

  • Small and Large sizes

  • Mount into SMC, not on slide

  • QPQ coated

  • Recoil reduction

  • 50 state legal

MAGWELL:

  • Flared magwell for easier magazine insertion

  • Improved grip support

  • Lightweight

  • High-strength impact resistant custom blended SI Polymer

BLAST SHIELD:

  • Shield thumb from muzzle blast and heat

  • Redirects muzzle blast forward and upward

  • Add additional Picatinny rail length to for attaching accessories

  • Quickly dissipates heat due to aluminum’s good thermal conductivity

  • Fits 1913 Picatinny rails

  • Machined from 6061-T6 aluminum

What other aesthetic options or finishes are available?

Lot’s of add on features

What others are saying?:

Nothing really found except full reviews

Link to other reviews:

The Firearm Blog  

Price point:

MSRP = $549.95

Comps = $59.95 - $69.95

Blast Shield = $39.95

Magwell = $19.95

Retail = $539.95 at Primary Arms  

I need it now! Availability:

Strike Industries or Primary Arms

Our Rating:

Pros:

  • Includes various mounting screws to mount optics

  • Foregrip with extra magazine

  • Picatinny Rail for mounting stocks or braces

  • Built in QD points

  • Raised optic platform

Cons:

  • Screws strip out or loosen up, even with red thread locker

  • Pistol grip could be more rounded up by the web of your hand

  • Charging handle can rub on slide mounted optic

  • Price

Score: 6.50 Okay 

If the 2 rear screws didn’t loosen up or strip out, the score would be much higher

Zaffiri Precision P320 Compact Slide and Barrel

  Zaffiri Precision is well known for making aftermarket slides. Starting out with Glock parts and slides, they have moved into doing Sig accessories as well. This includes their Sig P320 Compact slide and barrels. 

  As mentioned, the Zaffiri slide I received was for the Sig P320 compact. This slide would also be great for anyone building a P320 compact off of the Sig P320 FCU. Zaffiri also sent along one of their threaded and non-threaded barrels, more later on the barrels. I was looking for a compact slide so that I could run it on the Strike Industries modular 320 chassis with some accessories that needed a compact slide. I also installed it on a standard P320 compact grip module to see how it performed as a standalone slide.

  The Zaffiri ZPS.2 P320c slide is very nice. You’ll notice that the slide is lightened with, what I like to call, the Zaffiri slide cuts. These slide cuts consist of some small rectangle windows on the side and some angled smaller cuts on the top. It makes for a nice look. Then, as per any slide, there are some rear cocking serrations. A big feature about these slides is that they are cut for an RMR footprint. The slide has bosses to rest the optic on, as opposed to just screw holes. Zaffiri also supplies screws that they say to use for optic mounting. A cover plate comes installed on the slide, in case you don’t want to mount an optic.

  Zaffiri Precision has 4 standard color options for the ZPS.2 P320c slides. They are: FDE, OD green, Sniper grey, and Armor black, which is the one that was sent to me. In the custom line of P320 slides you have a vast selection of colors and patterns. Camo colors only add around an extra $90, total, over the standard 4 colors. The Armor Black is beautiful, probably a testament to the applicators. It’s smooth and didn’t even chip or wear off when installing the iron sights. The top notch machining used to produce these slides, also aids in the fact that the coatings look so good.

  Now let us discuss the Zaffiri Precision P320 compact 9mm barrels. Zaffiri actually sent me both a threaded and non-threaded (Flush and Crowned) barrel. The flush fit was needed for the Strike Modular Chassis, and the threaded is for future add-ons. Both came in a black nitride coating. SS, TiN, and Spectrum are also available. All the Zaffiri barrels have a swirl pattern on the outside. The threaded barrel comes with a thread protector and is threaded ½-28. Both barrels have conventional rifling and a polished chamber and bore. One can definitely tell that the bore and rifling is polished when looking through the barrels. From shooting both of these, they appear to be very accurate. Or at least better than my shooting ability.

  This Zaffiri slide and both barrels performed flawlessly. Both in the Strike Chassis and in a standard grip module. The P320 slide has way more time in the Strike chassis with the standard flush fit barrel. But this doesn’t take away that it works nicely in a grip module. In the Strike chassis, I used it without a slide mounted red dot. When in the 320 grip frame, I mounted up a Swampfox Liberty green dot. The slide functioned great with or without the optic. Lock up with the barrel is super tight. Slide to frame fit is not sloppy. Essentially, in both applications, the performance was good. Plus, the slide and barrel look good, which we all know that looking good is key. 

  If you are in the market for some aftermarket Sig P320 stuff, Zaffiri Precision has what you need. The ZPS.2 P320c slide and barrels are really well machined and just beautiful to look at. But that’s not all, they perform well too. So if you are building out a P320 compact, or just upgrading the one you have, I would recommend that you check out the stuff from Zaffiri Precision.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Compact Sig P320 slide with RMR footprint optic cut

Target Market:

Anyone building or upgrading their P320

FNBs (Features & Benefits of this product):

Slide:

  • 17-4 Stainless Steel

  • Black anodized cover plate

  • Supplied optic mounting screws

  • RMR optic footprint cut

  • Tighter tolerances

  • Made in USA

Barrels:

  • Fit: SigSauer® P320 Compact compatible – Drop in fit – 9mm

  • Twist: 1:10

  • 416R Stainless Steel

  • Stress relieved and heat treated to RC 40-42

  • Target crown and oversized lock up area.

  • Fully supported chamber (SAMMI spec) and improved feed ramp design

  • Conventional rifling with a polished chamber and bore to perform well with lead, plated and jacketed bullets

  • Finish Options: Stainless Steel, Black, Titanium Nitride TiN (Gold)

  • Large “ZP” Logo machined on the Port Side of the lockup.

  • Made in USA

What other aesthetic options or finishes are available?

FDE, OD Green, Sniper Grey. Custom cerakote colors are also available

What others are saying?:

Nothing found as of publishing

Link to other reviews:

Nothing found as of publishing

Price point:

MSRP:

Slide = $349.99

Barrel = $169.00 - $179.00

Retail = Same

I need it now! Availability:

Zaffiri Precision

Our Rating:

Pros:

Slide:

  • Tighter tolerances

  • Excellent machining

  • Custom options

  • RMR footprint cut

  • Made in USA

Barrel:

  • Polished chamber and bore

  • Coating options

  • Threaded barrel has thread protector

  • Made in USA

Cons:

  • Slide fit could be slightly tighter

  • Cover plate machining doesn’t match slide machining

Score: 9.00 Amazing

Favorite Link:  VIRIDIAN RFX 35 REVIEW  

Tyrant Designs SIG P320 Trigger

  Tyrant Designs sent me out one of their SIG P320 triggers. This trigger is nothing like Tyrant’s other trigger designs. It is a flat faced design with a finger hook at the bottom. The P320 trigger has a colored insert in the trigger itself. This insert also has the typical Tyrant design on the rear of the trigger.

  The Tyrant Designs P320 trigger comes in a few options. Or should I say color options. The trigger itself can be had in Black or Gold anodizing. Then there is the option for the trigger insert. The insert comes in 5 different color options: Black, Gold, Blue, Red, or Grey. A neat thing about the insert is that it puts a line of color down the center of the trigger face, if you choose a different color then the trigger itself. I chose a Black trigger with a Grey insert. It adds just a touch of color to the look. This insert also covers most of the back side of the trigger. On the back side, it has Tyrant’s typical arrow shaped cuts. It looks really good. 

  As mentioned, the P320 trigger is a flat faced design. So the main part of the trigger’s face is flat. Then Tyrant puts a hook at the bottom of the trigger. I really like the trigger design. The flat face gives an even pull and the hook keeps my finger from moving downward. I noticed that the trigger breaks about perpendicular to the frame. This gives a nice even, repeatable break. One of my favorite things about this trigger is the texture. It’s not really a texture, but you can definitely feel that the face is not smooth. I relate it to how a bead blasted texture feels. It gives grip, without adding a machined in texture.

  Tyrant designed the P320 trigger to have a reduction in overall travel. In fact, it’s a 10% reduction in overall pull length. Yes, you can feel that it is slightly shorter than the stock trigger pull. However, it still has a lot of over-travel. I wish they would have installed an over-travel stop, but they didn’t. Pre-travel may be a little shorter than the factory SIG, but I can’t really say because I forgot to measure it before installing the Tyrant Designs trigger. 

  One might ask, how is the trigger pull? It is pretty good. There is some slight pre-travel, as aforementioned. Then you hit a wall and the trigger breaks cleanly, followed by a bunch of over-travel. The break itself is really short! Reset is really good also. There is no changing of the factory P320 springs, so I expected the reset to be good. Now, Tyrant doesn’t say their trigger will do this, but in my SIG, it dropped the trigger pull weight by approximately 0.5 lbs. So I am now sitting at 4.75 lbs. This trigger made the P320 easier to shoot for me. 

  I really like what Tyrant Designs did in their SIG P320 trigger. It has a really good “feel” to it. Plus it has Tyrant's typical look to it. Go check out the P320 trigger from Tyrant Designs. After all, it’s a decent trigger design.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Different trigger style for SIG P320

Target Market:

Anyone wanting a better trigger

FNBs (Features & Benefits of this product):

  • 10% reduction in trigger travel

  • Flat face with bottom curve

  • Works with OEM internals

  • Color insert with Tyrant design style on rear of insert

  • Lifetime warranty

  • Made in USA

What other aesthetic options or finishes are available?

Different shoe and insert colors

What others are saying?:

5/5 stars at Tyrantcnc.com

Great trigger.

The trigger feels super solid when shooting, easy to install, and the design is flawless. Really hoping for some more awesome stuff for the 320 from Tyrant !

Link to other reviews:

Not much out there as of this review

Price point:

MSRP = $79.95

Retail = $71.95 at Rainier Arms 

I need it now! Availability:

Tyrant Designs or Rainier Arms

Our Rating:

Pros:

  • Crisp Break

  • Roughish texture on face

  • Reduced total trigger travel

  • Dropped trigger pull by ½ lb

Cons:

  • No over-travel or pre-travel adjustments

  • Lots of over-travel

Score: 8.00 Great

Favorite Link:  JSD Supply

Grey Ghost Precision Sig P320 slide

  Grey Ghost Precision has been in the aftermarket pistol slide game for some time now. Not so long ago they introduced Sig P320 slides to their product line. I had been eyeing them since the introduction. Then Grey Ghost introduced an O.D. Green Limited Edition version. I love OD Green. So here I am, OD green slide in hand! 

  The Grey Ghost Precision Sig P320 slides come in two size versions. The Compact and the Full size, or GGP320C and GGP320. I received the GGP320 full size version 1. They are essentially the same for review purposes. I also believe the only difference between the Limited Edition OD Green and the standard versions is the color. Especially since they are all the same price. Both slides come “stripped,” Therefore you must install all the necessary parts to make it complete and functionable. 

  When looking at the GGP320, the first thing you notice is the optics cut. It is a multi optics cut that uses a shim system to mount the different optics. These shims position the optic so that it is mounted securely. The shims and screws are provided, so there isn’t a need to hunt around for the proper screws. If not using an optic, a Grey Ghost marked G10 cover plate is included also. The optics cut can be used with optics that have the RMR, Leupold Delta Point Pro, SIG Romeo 1, and SIG Romeo 1 Pro footprints. I ended up mounting a Swampfox on the GGP320 because it uses the RMR footprint. It mounted up securely and works great. 

  Now that we have moved past the optic, the GGP320 has some other noticeable features. Instead of being a completely solid slide like the stock P320, Grey Ghost put three window cuts toward the front of the slide. One is on the top and then there is one on each side of the slide. These lighten up the slide some and it also makes the barrel stand out a little bit. The top of the slide isn’t rounded like the stock Sig one is. Instead, Grey Ghost put a flat cut on top and an angle cut on each side of that. Standard iron sight dovetails are also machined in. Probably the most functional addition to the GGP320 is the aggressive slide serrations. Grey Ghost machines them into both the front and rear of the slide. These serrations are way grippier than the stock ones, but not enough to tear your hands up. Between the slide serrations they also put an inlet cut. In this inlet is “GGP” and “limited Edition” text. I like how the logo and text are not very large, I would say tasteful. 

  The Limited edition OD Green GGP320 slide, as well as the FDE option, are both cerakoted. The cerakoting puts a nice finish on the slide. However, mine does show some holster wear. I guess one could say it is the start of a battle worn finish. I am not worried about the wear since the slide is machined from 416 stainless steel and essentially won’t rust. Since I’m on machining. Grey Ghost says their slides have tighter tolerances. This leads to better performance. You can actually feel the difference. There is less noticeable side to side and up/down play in the GGP320 slide over the factory one. The GGP320 is so much better machined, that just installing it dropped the trigger pull on my pistol by ½ pound. This was with all the same parts as before, the only difference was the GGP320 slide. I was pleasantly surprised.

  Now down to why you are really here, what are my thoughts? The GGP320 slide is top notch. I have had zero problems with it. I love the OD Green. The shim system is pretty easy to mount optics on. Recoil seems about the same. It runs pretty much any ammunition from 115’s up to 147’s without any problems. The machining of the slide is nice with no noticeable machining marks. The iron sight dovetails are tight, but not too tight. Plus, if you just have a P320 fire control group, this makes for an excellent addition to your “build.”

  Grey Ghost Precision has done another excellent job with the GGP320 slide. The Limited Edition OD Green is different, but in a good way. It looks fantastic and performs just as well. If you are looking at building out a P320, or just want something that makes mounting an optic easy, this slide might be just what you are looking for. Go check out Grey Ghost Precision and all their pistol slides, you won’t be disappointed. 

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Sig P320 slide with optics cut and enhanced features

Target Market:

Those building a P320 or those wanting a new slide option with optics cuts

FNBs (Features & Benefits of this product):

  • Full length P320 slide for 4.7” barrels

  • Machined from 416 Stainless

  • Tighter tolerances

  • For 9mm only

  • Optic cut compatible with Leupold DPP, Trijicon RMR and SIG Romeo1 and Romeo1Pro

  • Shim plate and screws for optics included

  • G10 cover plate

  • Weighs 8.84 ounces

  • Aggressive slide serrations

  • Front slide window cuts

What other aesthetic options or finishes are available?

Black and Grey DLC, or FDE Cerakote

What others are saying?:

5/5 stars at Rainier Arms

Nice addition to P320

 Nice addition to P320.I have a P320 as a backup competition gun with a Leupold Delta Point Pro mounted with a EGW mount on the rear sight cut. Nice to have a slide with a RMR cut. It was a drop in fit, it only required a minor adjustment for the optic. Overall, the gun feels lighter, not sure if cycles any faster or reduced recoil, but it is a nice upgrade.

Link to other reviews:

Nothing spotted at the time of this review

Price point:

MSRP = $439.99

Retail = $412.79 at Primary Arms 

I need it now! Availability:

Grey Ghost Precision or Primary Arms

Our Rating:

Pros:

  • Tighter frame fit

  • Multiple platform optic cuts

  • OD Green

  • Decreased trigger pull by ½ pound due to tighter tolerances 

  • Drop on installation

Cons:

  • Holster wear on Cerakote

Score:  9.00 Amazing

Favorite Link:  Walker Defense Research

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