Maxim Defense CQB Pistol PDW Brace QD Sling Mounts for AR-15 Pistols FDE%u200B Features: Additionally this unit will make your AR-15 pistol more compact and much easier to transport. This unit features the same housing as found on the CQB stock with all the adjustability and durability you would come to expect. This unit also comes with the SB Tactical Pistol stabilizing brace. Moreover once you have installed this unit and after your ATF form 1 clears you can quickly convert it to allow you to exchange the arm brace for a Maxim Defense butt stock. Maxim Defense CQB Pistol PDW Brace QD Sling Mounts for AR-15 Pistols FDE%u200B Specifications: Maxim Defense MXM47545 AR-15 Pistol PDW Brace Assembly Length of Pull Preset Steel Guide Rods Knurled Collapse Lever Built In QD Sling Mounts Length Closed 5.375 Length 1st Position 6.875 Length 2nd Position 8.375 Length Full Extended 9.24 Overall Weight 18.59oz 7075 Aluminum Alloy Housing Flat Dark Earth Finish Maxim Defense CQB Pistol Brace Housing SB Tactical Arm Brace Standard Buffer and Spring Fits: AR-15 Mil-Spec Pistol Lower Receivers