Midwest Industries Drop In Trigger Kit W/ Lower Parts Ambi Safety Black

The Midwest Industries Drop In Trigger Kit with Lower Parts and Ambi Safety delivers a complete, self-contained trigger system built to upgrade your AR platform without the guesswork. This kit combines a 3.5-pound single-stage trigger, ambidextrous safety selector, lower receiver parts, and a Magpul trigger guard into one package—designed for shooters who want a smoother, more predictable break without extensive fitting or adjustment. Whether you're running a .223 or .308 AR, this drop-in solution gets you behind the trigger faster.

Built from S7 tool steel with heavy-hit hardening and black nitride finish, the interior components resist corrosion and handle the rigors of the range or field. The trigger itself features a crisp, clean break with a quick reset and minimal overtravel—traits that matter when you're pushing for accuracy or speed. The cassette housing is CNC machined from heat-treated aluminum, weighing just 2.4 ounces, so it adds nothing unnecessary to your rifle. Anti-walk pins and screws come included to keep everything locked in place, and the ambidextrous safety selector offers both 60- and 90-degree throw options to match your grip style.

Installation is straightforward: the design is self-contained with no fine-tuning required, letting you get to shooting instead of troubleshooting. The kit ships with all lower parts needed—bolt catch assembly, magazine catch, take-down detents and pins, buffer retainer, and safety selector components—plus the Magpul trigger guard. Everything is 100% made in the USA and backed by a limited lifetime guarantee. One note: the center set screw is not to be modified; any tampering with the trigger itself will void the warranty.