The MK1 Patrol 14.5 pinned 223 Wylde carbine is a true front line fighting rifle. The tuned rifle-length gas system and suppressor optimized buffer system ensure a soft yet reliable gas system suppressed or unsuppressed. The 416R SS HEDP barrel provides exceptional accuracy and durability. The rifle due to its barrel length must have a pinned and welded muzzle device prior to leaving the factory. The MK2 REECCE features a tuned mid-length gas system and suppressor; Griffin Silencer Mount Muzzle Device; Griffin A3 grip; Griffin Forged Upper And Lower Type 3 Hardcoat Anodized Anti-rotation tabbed rail locks into upper and Griffin ECS (Extreme Condition Stock).