Made in the usa, the yhm gas block replaces your existing front sight to provide a simple, low profile design that can be used to mount a rifle length forearm to a carbine length barrel.It is mounted by the use of two clamping screws.The two screws take a 9/64" allen wrench.
Finish: Black Phosphate
Type: Gas Block
Model: Low Profile Gas Block
Dimensions: .95" L
Size: .75"
Material: Steel