Roverguy mentioned: They'd work for black powder masses, but when you explain, might be a true problem with smokeless. The G21 has the finger groves in the front with the grip along with the normal mediocre polymer Glock sights. The slide and barrel are Melonite heat handled, and the finish https://jeffreyxxsbh.ziblogs.com/39720025/not-known-factual-statements-about-45-shell-casing