JMac Customs ST-5 Skeletonized 5 Position Buffer Tube with 1913 Folding Mechanism

This M4 tube adapter replaces the standard buffer tube to ensure the stock folds as flat as possible! (With proper folding adapter) The ST-5 was designed specifically to allow stocks such as the LWRC Ultra Compact Stock to collapse all the way up to the folding mechanism for a shorter overall length and profile. The ST-5 is the perfect option for compact stocks and braces! Fits most M4 style stocks/braces Lightweight and Rigid Integrated QD Sling Sockers 5" Length 5 positions Compatible with SIG folding mechanisms 7075 T6 Aluminum Type III Hardcoat Anodized FM-SM-1913 - 1913 Folding Mechanism Clamps on any "1913" or "Picatiny" Rail Works with all of our ArmBar, Skeleton Stocks and Skeleton Tubes Works with SIG MPX/MCX folding braces/stocks Folds Left or Right Has 2 height adjustments 4140 HT Black Nitdride Torque spec: 20 in/lb. Adds approx .5" to stock/brace length Allows your stock/brace to lock in the folded position