This RRA match AR-15 trigger kit is designed to be used with Mil-Spec lower receivers with .154” trigger and hammer pins and can also be used with anti-rotation pins for a more secure fit. However, the larger .1555″ pins will give you a snug fit. The versatility of AR-15’s is extended even further as some parts are interchangeable with AR-10 (.308) and DPMS LR 308 style rifles and this trigger is compatible with both. Another feature is the lightened hammer which allows for a decreased lock time while still maintaining reliable primer ignition even with hard military surplus ammo. This fire control group provides a custom tuned feel at an affordable price whether you are upgrading an old trigger or assembling a new rifle.
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