Referencing the GEN 2 AR57-LEM Upper Assembly, the changes are extremely noticeable, first by shaving almost one pound of weight and fluting the barrel, but still keeping the integrity.
We have increased the rear rail and updated the charging handle and magazine release and this unit is completely ambidextrous. Another upgrade that you may not notice but is quite significant, we have upgrade the spring and extractor in the bolt.
The innovative, low-profile 50-round magazine (sold
separately) is positioned conveniently above the barrel for optimum weight
distribution. Spent cases are ejected straight down through the magwell to avoid
striking other shooters and for easy range cleanup. Simple, reliable blowback
operation with a free-sliding bolt that’s the only moving part means there’s no
gas system to foul or clog with carbon. Ultra-rigid, monolithic receiver/handguard
rail is machined from a single block of aluminum, with nearly 3 feet of
Picatinny rail space for mounting optics and other accessories. Plenty of vent
holes in the handguard ensure maximum cooling during sustained fire.
Free-floating, 4140 chrome-moly steel barrel is 16" long, with a unique,
multi-port flash suppressor. Comes with a correct-weight recoil buffer for use
with 5.7 x 28mm ammo; fits in the receiver extension of an M4-style stock.
