Aspect mounted program with an integrated MILSTD 1913 rail piece for sighting units. Made for use Using the M203. Posted by BRAD on 23rd Jan 2020 Great merchandise, fits just like a glove, strong, strong and can have a beating. Took me a minute to put in it for the https://kac-m4-rail43962.snack-blog.com/29468260/kac-quad-rail-secrets