The Primary Weapons Systems MK114 MOD 2-M" an advanced M4 pattern weapon, is the most compact package not requiring NFA paperwork. It features a 14.5" barrel with pinned and welded PWS FSC compensator to bring it to a legal 16" length. Additional features include the reliable PWS long stroke gas piston operating system, 13.5" M-LOK handguard, Radian Raptor charging handle, PWS ambidextrous lower receiver, mil-spec enhanced trigger, PWS enhanced buffer tube, H2 enhanced buffer and BCM stock and pistol grip.Features :PWS Long Stroke Piston Operating System3-Setting Adjustable Gas SystemForged Upper and Lower ReceiversAnodized FinishFSC556 Muzzle Device