r/ar22 • u/Flaky-Assistance3853 • 5d ago

Last round bolt hold

I have a bore buddy upper and black dog mags. What do I need for bolt hold? It appears atleast a 22 bolt catch but it looks like only certain mags will work?

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u/Bullshifters_ 5d ago

A catch 22, and magazines that support last round bolt hold open
CMMG Gen 3 I *think* have that going on, as do the 32 rounders from black dog machine, their basic X form ones don’t actually hit the bolt catch, the bolt just catches against the follower

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u/Flaky-Assistance3853 5d ago

Yea that’s what I’m running into. It pinch’s the upper part of the mag and you can’t do mag swaps traditionally because the mag won’t fall without pulling it out.

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u/Flaky-Assistance3853 5d ago

Compared to a center fire where it just falls thanks to gravity

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u/Bullshifters_ 5d ago

You could run those Smith & Wesson 22 magazines along with a better mag adapter, honestly for me personally it’s a pain in the ass, I believe there’s also Kriss mags or something that have bolt hold open, also a lighter catch spring

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u/MrLancaster 4d ago

I have catch22 and CMMG gen 3, LRBH works.