A3 Industries Direct-Fit Folding Brace Black USW. Machined from 6061 aluminum they use the original B&T hinge-point. This is the lightest brace option in the market and comes equipped with our fiber-reinforced Zytel injection-molded Steady-brace. NOTE: Does not fit the USW-A1 or USW-320. Not compatible with GEN 5 Glocks. Now fits small frame and large frame chassis Specifications for A3 Industries Direct-Fit USW Folding Brace: Manufacturer: A3 Industries Color: Black Length: 13.5 in Features of A3 Industries Direct-Fit USW Folding Brace Integrated Latch For Side-Folding Retention Revised Hinge Angle To Match Firearm Offset Extension For Flatter Side-Folding Added Pad To Utilize Spring-Assisted Deployment Package Contents: A3 Industries Direct-Fit USW Folding Brace A3 Industries DFB-USW: Direct-Fit Folding Brace Black USW