Features: 3.5lb Single-stage trigger system Allows you shoot more accurately with less effort Ultra-smooth break with a crisp, clean release Fits small pin size (.154) Quick reset and low overtravel for enhanced speed Interior parts are S7 tool steel with heavy-hit hardening then black nitride finished for enhanced strength and corrosion resistance Lightened trigger pull (3.5-lb. pull weight) Lightened hammer Drop safety feature Self-contained design makes it easy and quick to install with no fine-tuning needed Unit weight: 2.4 oz. CNC machined from high-grade, heat-treated tool steel and aluminum Blue anodized aluminum cassette housing Fits most .308 and .223 AR style platforms Anti-walk pins and screws included. Ambi Safety Selector 60 / 90 degree option Magpul Trigger Guard - MAG417 Midwest Industries products are backed by a limited lifetime guarantee. 100% Made in USA Note: The center set screw should not be tampered with. Any attempts to modify the trigger will void the warranty. PARTS INCLUDED Bolt Catch Bolt Catch Plunger Bolt Catch Spring Bolt Catch Roll Pin Mag Catch Lever Mag Catch Button Mag Catch Spring Buffer Retainer Spring Ambi Safety Selector - 60 / 90 degree option Buffer Retainer Safety Selector Detent Spring Safety Selector Detent Black Magpul Trigger Guard - MAG417 2 x Take-down Detent Springs 2 x Take-down Pin Detent Take-down Pin - Rear Pivot Pin - Front MI-TRIGGER-C - Midwest Industries Enhanced AR15 Drop in Curved Trigger 3.5lb Single Stage Anti-Walk Pins