Luth-AR A1 Compensator 3 Prong Black. 223 SKU: BL-3P Specifications for Luth-AR A1 Compensator 3-Prong: Manufacturer: Luth-AR Color: Black Caliber: 5.56x45mm NATO .223 Remington Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Weight: 2.08 oz Condition: New Gun Type: Rifle Features of Luth-AR A1 Compensator 3-Prong: Shipping Weight .5 lbs Shipping Dimensions 2 x 1 x 1 in Application Carbine Rifle Caliber .223 5.56 Weight Ounce 2.08 Weight lbs .13 Share: Related products Package Contents: Luth-AR A1 Compensator 3-Prong What firearm models does the manufacturer say Luth-AR A1 Compensator 3-Prong is compatible with? The manufacturer says that Luth-AR A1 Compensator 3-Prong is compatible with AR-15Luth-AR BL-3P: A1 Compensator 3 Prong Black