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Brian Enos's Forums... Maku mozo!

difference between Super 90 / 121 M1?


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I used to have a 121 M1 in the 80's. The 'main' difference is that, while still inertia operated, it had a dropping locking block rather than a rotating bolt. And, I believe it cycled much faster than the current system. That was one of it's big claims to fame at the time.

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