Sylvan Arms Folding Stock Adaptor Gen 5 LH. Turn your AR into a compact concealable platform with a folding stock adapter built to outlast your rifle. made in specialized factories the SA5 is lightweight and 250percent stronger than our 4th gen adapter. Choose from a left folding or right folding option depending on your needs. Built to work and built to last the SA5 is user-serviceable and easy to install. Specifications for Sylvan Arms Gen5 LH Folding Stock Adaptor: Manufacturer: Sylvan Arms Color: Black Gun Make: AR Platform Gun Model: AR-9 AR-15 Gun Type: Rifle Fabric/Material: Steel Threads per Inch: 1-3/16x16 Stock/Brace Material: 4140 Steel Features of SYLVAN SA5P-L FOLDING STK ADAPT GEN 5 LH AR15 Compatible 4140 Steel and only 9.4 ounces Right or Left Fold Versions Adjustable Hinge Tension Improved and Hardened Buffer Pin 2 QD attachment points Improved Locking Mechanism Standard 1-3/16 x 16 threading Includes all tools needed for easy installation Includes a 1045 Steel Bolt Extension No additional parts are required for standard AR15 Bolt Carrier Groups Installs in under 5 minutes. Package Contents: SYLVAN SA5P-L FOLDING STK ADAPT GEN 5 LH What firearm models does the manufacturer say Sylvan Arms Gen5 LH Folding Stock Adaptor is compatible with? The manufacturer suggests that Sylvan Arms Gen5 LH Folding Stock Adaptor is compatible with AR-15 AR-9SYLVAN SA5P-L FOLDING STK ADAPT GEN 5 LH