Arm Brace Stop Multi-Fit The Phase 5 ABSM (Arm Brace Stop Multi-Fit) is a machined billet aluminum accessory for several of the SB Tactical Pistol Stabilizing Braces. The ABSM allows a stabilizing brace to be installed at a comfortable length while minimizing rotation and preventing forward movement of the brace. The ABSM also includes a Built in QD connect feature that allows the pistol to be used in conjunction with a quick detach weapon sling system. Description: Compatible with SB Tactical Braces: SBM4, SOB, SBX-K, SBV Dual Function: Built-in QD Attachment and Pistol stabilizing brace receiver stop - One side of the ABS(TM) is equipped with a QD sling attachment, the opposite side is a receiver for the Pistol Stabilizing Brace which prevents unwanted rotation and movement when installed correctly The ABS installed on the pistol buffer tube (PBT) brace securely positioned at desired location Built in QD feature that allows the pistol to be used in conjunction with a quick detach weapon sling system Precision machined 6061 T6 USA made Billet aluminum. Anodized finish - Red Fits tube diameters from 1.22 - 1.25 inches. Weight: 1.1oz Includes: (1) Arms Brace Stop (1) Allen Wrench and hardware