Learn how to convert your Smith & Wesson M&P15-22 rifle into an M4 carbine variant, using the following firearm parts and accessories from Tacticool22 and others: S&W M&P15-22 Barrel Nut Wrench S&W M&P15-22 Free-Float Handguard Converter Wrench S&W M&P15-22 Free-Float Handguard Converter (Standard) OR S&W M&P15-22 Free-Float Handguard Converter (Modified) Note: The “Modified” handguard converter requires permanent […]