Luth-AR 308 Extractor Pin Black. 308: Manufacturer: Luth-AR Color: Black Finish: Matte Fabric/Material: Stainless Steel Steel Caliber: .308 Winchester Gun Make: AR Platform Gun Model: AR-10 Weight: 0.16 oz Projectile Caliber: .308 Caliber Features of Luth-AR Extractor Pin .308: Shipping Weight .25 lbs Shipping Dimensions 1 x 1 x .5 in Weight Ounce .16 Weight lbs .01 Caliber .308 Package Contents: Luth-AR Extractor Pin .308 What firearm models does the manufacturer say Luth-AR Extractor Pin .308 is compatible with? The manufacturer says that Luth-AR Extractor Pin .308 is compatible with AR-10Luth-AR 308-BT-03: 308 Extractor Pin Black