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Old 09-05-2017, 06:55 PM
cyphertext cyphertext is offline
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Quote:
Originally Posted by goodoboy View Post
Thank you snm8510 for the response

Few questions please:

1. So the M&P®15 SPORT™ II is Gas Operated Semi-Auto action, does this mean the rifle is Direct Impingement gas driven or gas piston. I am bit confused.
Direct impingement. The gases are routed back to push directly on the bolt carrier.

A piston AR has a piston that the gases operate. The piston pushes an operating rod that drives the bolt carrier back. Piston is said to be cleaner, but is proprietary... stick with direct impingement, especially for the first one.
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