- Meets U.S. Military Specifications for the M4 Carbine
- Average Pull Weight of 6.5 Pounds
- Trigger & Hammer are 8620 Steel
- Disconnector is 1070 High Carbon Steel
- Hardened 0.001" Oversized Pins
- Full Power Hammer Spring for Reliable Ignition
The ALG Defense Quality Mil-Spec (QMS) trigger is an enhanced Mil-Spec type AR-15 trigger. The QMS is very similar to Mil-Spec units in pull weight, but the honed sear surfaces and polishing result in a smoother than standard pull. The honing of the sear surfaces does not change the geometry of the stock trigger, so the high reliability of the Mil-Spec trigger is maintained. The pull weight is 6.5 pounds, which falls within the Military specifications of 5.5 to 9.0 pounds. The Mil-Spec pull weight makes this trigger perfect for users who want all of the rugged reliability of a standard trigger, with an improved smooth pull. The trigger and hammer are 8620 steel alloy and the disconnector is 1070 high-carbon steel all tempered and hardened to Military Specifications. The included pins are 4140 tempered chrome moly steel that is centerless ground to 0.001" larger than stock, resulting in an improved fit within the lower receiver, while still remaining slip-fit and field serviceable. The tempering of the pins keeps debris from imbedding into them and wearing on the lower pin holes which can occur with softer pins. The springs used with the QMS are full power to maintain positive ignition with all types of ammunition.