Leapers UTG Standard AR15 Steel Barrel Nut Black. 85in Weight - 1.3 oz Material - Steel Height - 1.55in Color: Black Gun Model: AR-15 Condition: New Fabric/Material: Steel Finish: Matte Features of Leapers UTG Standard AR15 Steel Barrel Nut: Durable Steel Construction with a Matte Black Phosphate Finish Compatible with Standard Mil-Spec AR15 Upper Receiver Package Contents: Leapers UTG Standard AR15 Steel Barrel Nut What firearm models does the manufacturer say Leapers UTG Standard AR15 Steel Barrel Nut is compatible with? The manufacturer suggests that Leapers UTG Standard AR15 Steel Barrel Nut is compatible with AR-15Leapers TL-ARBN01: UTG Standard AR15 Steel Barrel Nut Black