I have 2 Full Size GI 1911 RIAs in 9mm, both had grip safeties occasionally bind the triggers, preventing trigger reset after firing. I did not do anything and they both wore in and fixed by themselves. Both occasionally would not hold the slides open at the last round. It was the magazine followers, spread the fingers a bit and just find. 1911 9mm has longer slide stop and the RIAs come with the correct one. It is a common issue for 9mm 1911s that I heard. I bought them thinking may shoot more accurate than my other steel frame 9mms while heavier and 1911s known for better trigger, not really. Cheaper to shoot than 45ACP and I always want a 1911!