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ceb3 December 31, 2017 22:01

bolt hold open issue M1A
Replaced the bolt catch.
Still does not want to keep bolt back.
Could this be telling me op rod spring needs replaced?
Finicky with magazine which I think is Korean-no markings.:confused:

FriendBesto January 01, 2018 02:22

Try a CMI mag before you do anything. They can be found for around $20.
I don't know of many Korean mags that are good for anything.

ArtBanks January 01, 2018 07:25

Plenty of possibilities.

Receiver geometry, bad bolt lock, bolt lock spring weak,mag follower out of spec.
Should not be caused by op rod spring.
Most likely is the mag follower. Even CMI have had poor followers on some mags.
Some receivers need material removed from the top of the lock opening so it can raise far enough to function properly.
You will know when you hit the right combination. Good luck.

Semper Fi

maxaks January 01, 2018 20:46

my guess would be the mag followers. Did you try with a mag empty. Sarco has usgi followers... but if it were me I ditch the Korean and get some other alternative mags

W.E.G. January 01, 2018 22:37

Korean mags are guilty until proven innocent

KoKodog January 05, 2018 17:34


Originally Posted by W.E.G. (Post 4521090)
Korean mags are guilty until proven innocent

yup, ......

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