Quote:
Originally Posted by BlueOvalBandit
Is there something unique about an M&P 15 vs a normal milspec AR-15? Cause the bolt carrier and components should have dimensions such that the firing pin is not long enough to touch the primer unless the bolt is cammed to the locked position.
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The firing pin is housed in the bolt. As long as the case head is 'flat' against the bolt face, the primer is in reach of the firing pin--regardless of whether the bolt has rotated and locked into the barrel extension, or even if bolt is only partially into the barrel extension.