13 different hammer extensions to fit your firearm with an exposed hammer after you mount a scope.
Installs using a 1/16" hex/allen set screw that is 3/16" in length with 5-40 UNC-2B Threads. You insert the set screw in the hollow end of the hammer extension. TIP: The set screw hole is centered and but be hard to see, looking in with a quick flashlight can help center your set screw on install.
Note: Due to the varying dimensions of hammers, minor fitting may be required.
Henry Big Boy Centerfire Rifles, Post 2010 models & Henry Single Shot - GTHM283