AR57 SLC16 Complete Upper Assembly (New Redesigned Model)

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New Redesigned AR57 SLC Complete Upper Assembly with 16″ barrel, flash suppressor, semi-auto bolt and a 4.9oz “Carbine” buffer.  The new design has a lightweight barrel, lightweight flash hider, M-LOK rails and is overall 1 pound lighter than the Gen2 model.  This upper also comes with ambidextrous mag release and charging handle.  Perfect for converting your current AR15 lower into an AR57 Long Gun.  All AR57 magazines are sold separately.


**NOTE:  A2 type butt stocks (Rifle Stock) requires the AR57-A2 Buffer Extension.  Sold separately for $15.00.


The upper receiver and rails are precisely milled 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.


Additional Information
Manufacturer AR57
Model AR57 LEM Complete Upper Assembly
Type Upper Assembly Only
Caliber 5.7x28mm
Action Semi-Automatic
Capacity 50+1
Receivers 7076 T6 Aluminum
Trigger N/A
Barrel Length 16″ Fluted Barrel with Flash Suppressor
Overall Length 23.5″
Weight 3.2 lbs.
Accessories No Accessories Sold with Upper
Product UPC AR57LEM Upper

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.

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