Complete AR57 LEM Rifle (Gen2)

Out of stock - Join the waitlist to be emailed when this product becomes available


The AR57 PDW Upper is the most revolutionary new design on an AR15/M16 platform.  Blending the near perfect ergonomics of the ubiquitous AR15/M16 lower with a light weight, fast handling monolithic upper receiver system chambered in the 21st century’s exciting new caliber – 5.7X28mm.

Complete reliability, simplicity of design, and utterly low maintenace are hallmarks of the AR57. The ground breaking 50 round magazine, innovated and produced by FN Herstal, is the heart of this exceptional system. Top and forward mounted on the AR57 upper receiver, directly above the barrel for optimum balance and exceptional shoot ability, allows the shooter to take best advantage of cover and concealment. There is no magazine in the way to force the operator up off the deck and into the path of incoming fire. The shooter will also notice that he can place his support hand and arm directly under the rifle where it belongs and obtain a perfect shooting position in off-hand, kneeling and prone positions.

The upper receiver and rails are precisely millled from a monolithic block of aircraft grade 7075 T6 aluminum. Any sighting systems mounted on the M1913 Picatiny rails will stayed zeroed through the toughest of missions. Designed with reliability as it’s primary  feature. There is no gas system to become clogged with carbon or fouling making any maintenance a snap. The bolt and chamber stay clean well beyond extended shooting sessions.

The AR57 PDW Upper receiver comes with a ER Shaw barrel,  precision manufactured for exceptional accuracy and extreme durability – offered in numerous lengths and features.

SKU: 094922395665 Categories: , Tag:


Additional Information
ModelAR57 LEM Rifle
TypeRifle: Semi-Auto
Receivers7076 T6 Aluminum
TriggerMil-Spec Trigger
Barrel Length16″ Fluted Barrel with Flash Suppressor
Overall Length32″ Retracted/36″ Extended
Weight6.5 lbs.
AccessoriesOne 50 round Magazine
Product UPCAR57LEM

Additional Information Content

Modern Warriors

We started Modern Warriors for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

Learn More