Aero Precision APRH100536C Low Profile Gas Block Black Nitride 4140 Steel With .936 Diameter For Multi Platforms This Gas blocks Aids In creating An Efficient And Reliable Gas System For Your AR15 Or AR 308 Rifle Build. It Is constructed Of 4140 Steel With a Steel Screw Set With a knurled Cup Point. Model: Low Profile Material: 4140 Steel Finish: Nitride
