I know at one point this was discussed a lot, and I didn't sufficiently memorize at the time.
I know there are more than one style of 9mm bolt , and at least one requires hammer replacement/ modifications.
In kicking around a potential project , the given starting point is a pre-existing , complete factory lower, set up for 5.56mm . What (if any) flavors of 9mm Uppers would be compatable w/o modification to the lower assy ?
I know there are more than one style of 9mm bolt , and at least one requires hammer replacement/ modifications.
In kicking around a potential project , the given starting point is a pre-existing , complete factory lower, set up for 5.56mm . What (if any) flavors of 9mm Uppers would be compatable w/o modification to the lower assy ?
9mm AR-15 Bolt/ Uppers
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