The slim, 1.8" diameter, 15" length, CNC machined, 6061-T6 billet aluminum, free-floating handguard features a full length Picatinny rail and is adorned with an American flag moving forward towards freedom and the words "We the People" boldly displayed on each side. The 16" 416 stainless steel barrel has the 1/2 x 28 thread pattern Unique-ARs Rook Muzzle Brake affixed to help reduce recoil and muzzle climb. A 4140 AE steel M4 barrel extension and the billet upper receiver with M4 feed ramps ensures reliable feeding of your ammunition. The flat-top upper has an integrated Picatinny rail for mounting the optics of your choice. Chambered in .223 Wylde, the WeThePeople-15.s can safely shoot both .223 Rem and 5.56 NATO ammunition.- CALIBER .223 REM/5.56MM NATO- MAGAZINE (1) magazine with 30rd capacity- BARREL 16" 416 Stainless Steel Barrel with 1:8 Twist, Unique-ARs Rook Muzzle Brake- RECEIVERS Billet 6061-T6 Aluminum- HANDGUARD 15" We the People - STOCK Unique-ARs 6-Position Adjustable Carbine Length Mil-Spec Polymer