Sharps Bros Livewire AR-15 lower receiver review

Written by: Buddy Murphy

This is a review of the Sharps Bros Livewire AR-15 lower receiver. Yes, these are the same guys that make lowers with skulls, warrior helmets, or other goofy things on their magazine wells. But when they get serious, they make a quality, functional piece of kit.

One of the first things you'll notice is the heavily flared mag well, which not only looks great but also makes reloads faster and more intuitive. The ambidextrous bolt release is another welcome feature, providing ease of use for both right and left-handed shooters. This particular design for a right side bolt release has the perfect amount of force needed to release the bolt. Some other receivers take too much effort to release the bolt, forcing you to move your hand off of the fire controls, like the PWS Alpha.

The right side bolt release is especially useful for me (right-handed shooter) when shooting CMP (Civilian Marksmanship Program) courses of fire. The first and last stages are single load stages. Meaning, you have an empty magazine in your rifle (or a specialty mag), you drop a round into the ejection port, close the bolt, and fire your one round. You repeat that 10 or 20 times depending on the stage. This forces you to break position between each shot. By having the bolt release on the right side, I can hold my rifle against my shoulder with my left hand, and get another round, drop it in the rifle, grip the rifle with my right hand, and close the bolt, minimizing my movement between shots.

The transition between the integrated, oversized trigger guard and the magazine well is stepped, giving it a distinct and clean look. The threaded bolt catch pin and rear takedown pin recess also add to its overall precision and durability.

As of July 2021, Livewire has undergone a significant upgrade, it is now made from a forging. The process begins with a 7075 aluminum billet, which is heated to 800 degrees and then forged into a near-final shape using a custom tool in an impressive 4100-ton press.

Post-forging, the receiver undergoes final machining on CNC machines. This reduces material costs and machine time without compromising quality. The result is a receiver that feels incredibly robust and well-finished, with every detail meticulously crafted. The anodized black finish, done to MIL-A-8625 standards, ensures durability and a sleek professional look.

Putting the lower parts in the receiver was a standard affair except for the left side bolt catch. Instead of a roll pin holding the bolt catch to the receiver, it has a small hex-head screw. This makes it much easier to attach the bolt catch than tapping in a roll pin. Also, before you attach the bolt catch, you must insert the included transfer bar. The transfer bar allows the bolt release, on the right side, to push the bottom of the bolt catch toggle (causing the top to move in towards the receiver as if you pushed it), releasing the bolt.

In summary, the Sharps Bros Livewire AR15 receiver delivers on every front; strength, precision, and aesthetics. It’s a top-tier choice for anyone looking to build or upgrade their AR15 with a receiver that truly sets itself apart from the rest. While it maintains the classic AR15 aesthetic, it brings its own unique flair and functionality to the table: like the oversized integral trigger guard, beveled magazine flare, and ambidextrous bolt release. It is fully compatible with mil-spec parts and magazines. Weighing around 8.7 ounces, it strikes a perfect balance between weight and durability.