Re: Mr1 Acs
the answer is yes. But if you decide to put a ACS bolt in the MR1, you will not have the quick strip feature that the MR1 has. On the MR1, the stock bolt can be removed without having to remove the hammer. If you put a ACS bolt in then you will have to remove the hammer and bolt as one unit.
I hope this clears up your question.
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