[Review] Smith & Wesson M&P15 Sport II: Good Budget AR?
This guide details the process of upgrading the trigger on a Smith & Wesson M&P15 Sport II using a Palmetto State Armory (PSA) drop-in unit, as demonstrated by Johnny from Pew Pew Tactical. The upgrade aims to improve trigger feel and performance. A thorough safety check is paramount before and after the modification.













