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Discussion Starter · #1 ·
I would like to outfit an M&P 15-22 with a laser trainer, and I see that .22LR laser snap caps are basically impossible to come by.

It looks like I could possibly swap out the bolt carrier and put in a SIRT trainer or MantisX Blackbeard?

Does anybody know if either of these would fit? I know the upper is not interchangeable with a .223 but might I manage just the bolt carrier so I can do dryfire laser training on non-range days?

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