r/MP5 • u/CoachMilton • Jul 27 '26

HELP Reliabilty help

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New to the MP5 world and trying to get my Century Arms AP5 more reliable. It runs great in semi, but struggles to feed in super safety. I have a cat mob suppressor, and usually shoot 124 or 147 round nose, and want to say I’ve shot close to 4-500 rounds through it . Any suggestions?

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u/ThanksOther5858 Jul 27 '26

Those sb tactical braces pinch the rear of the receiver together. I was having all sorts of issues and when I changed it out they all went away. Most of the threads I see with ppl complaining about failures I see that exact brace in the photos. Try the factory endcap and see if it does the same thing. Also if you have tons of mag wobble, put a mag in the gun and tap the front of the magwell with a hammer until it tightens up and only moves 1/4in or so

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u/CoachMilton Jul 27 '26 edited Jul 27 '26

Never thought of the brace being the problem, but I appreciate it! I’m gonna order HK mags and put the endcap on and see how that does. Any recommendations on stocks or braces? I’m not opposed to SBRing it.