The EVOLVE-15 is the benchmark of AR-15 based firearms in form, function, design and innovation. Every aspect of the EVOLVE-15 is designed to not only look great, but out perform other rifles in its class. It features our patent pending R.A.C. System which stands for Rapid Action Cam. This system replaces the aged, out-of-date pin system and allows the rifle to lock together tighter than previously able. R.A.C. also allows the user to quickly and safely change, clear and clean their weapon. The magwell has been flared as well as shortened. The trigger guard is drastically enlarged to allow even the largest gloved fingers easy and safe use of the trigger. The handguard features an industry first standard full length ARCA Rail, integral 45-degree red dot mounting on both sides, as well as QD cups and full length M-Lok. - CALIBER .223 REM/5.56MM NATO - ***NO MAGAZINE*** STD AR mags will fit - BARREL 16" - MUZZLE 1/2x28 TPI w/ 4 port X-Brake - HANDGUARD ARCA M-LOK Rail - STOCK Collapsible