ODIN Works SBM4 Stabilizing Brace Pistol Tube Black. The ODIN Works Pistol Buffer Tube uses a standard carbine buffer and carbine buffer spring and the buffer tube comes with a locking collar and ambidextrous sling attachment points (no castle nut required). The ODIN Works SBM4 Pistol Stabilizing Brace Pistol Tube is built to last with an extremely durable 6061 aluminum construction and a matte black Type III hard anodize finish. For an impressive way to be sure you are using one of the best pistol tubes the shooting industry has to offer choose the ODIN Works Pistol Buffer Tube for Stabilizing SBM4 Brace. Specifications for ODIN Works SBM4 Stabilizing Brace Pistol Tube: Manufacturer: ODIN Works Color: Black Finish: Hard Anodize Finish Fabric/Material: 6061 Aluminum Gun Model: AR-15 Condition: New Features of ODIN Works SBM4 Stabilizing Brace Pistol Tube: Specifically designed for a perfect with the with SB Tactical SBM4 Pistol Stabilizing Brace (SB Tactical SBM4 not included). Unique locking collar prevents SBM4 from rotating and moving forward. Matte black Type III hard anodize finish. Receiver end plate designed with ambidextrous sling attachment points and QD mount (no Castle Nut required). Weight: 5.75oz Uses standard carbine buffer and carbine buffer spring. Includes: Pistol buffer tube locking collar receiver end plate hex wrench. Package Contents: ODIN Works SBM4 Stabilizing Brace Pistol Tube What firearm models does the manufacturer say ODIN Works SBM4 Stabilizing Brace Pistol Tube is compatible with? The manufacturer says that ODIN Works SBM4 Stabilizing Brace Pistol Tube is compatible with AR-15ODIN Works ACC-SB-PT2: SBM4 Stabilizing Brace Pistol Tube Black