Within an RIA 1911 I didn't see the bulge. I'm guessing those within your pic had been loaded Incredibly hot and/or significant bullets with the bullets jammed into the lands. The G21 has the finger groves for the front in the grip and also the standard mediocre polymer Glock sights. https://45acpbrass74063.blogsvirals.com/37181567/indicators-on-45-brass-you-should-know