The JE Machine AR-15 ultra-lightweight Skeletonized Pistol Stabilizer Blade is manufactured to exacting tolerance and fits pistol buffer tube. The stabilizer improves your marksmanship by providing additional support for your pistol when you operate your AR pistol with one hand. The design incorporates a vertical fin, which you stabilize against the inside of your forearm when in the firing position. Install within minutes, just slip it on and tighten the large set screw for a rock-solid installation. Specifications for JE Machine Tech Skeletonized Pistol Brace: Manufacturer: JE Machine Tech Color: Black Gun Type: Pistol Length: 6.35 in Weight: 5 oz Max Width: 1.64x5.47 in Diameter Compatibility: 1.25 in Gun Make: AR Platform Fabric/Material: High Strength Polymer Gun Model: AR-15 Features of JE Machine Tech Skeletonized Pistol Brace Material: high strength polymer. Length 6.35in Width 1.64in x 5.47in Weight: 5 ounces Only for pistol tubes with an outer diameter of 1.25in Package Contents: JE Machine Tech Skeletonized Pistol Brace What firearm models does the manufacturer say JE Machine Tech Skeletonized Pistol Brace is compatible with? The manufacturer says that JE Machine Tech Skeletonized Pistol Brace is compatible with AR-15