This Armaspec upgrade to the AR-15’s standard buffer and spring includes a trio of interchangeable buffer weights that allow the user to tune it to his or her rifle/load.

The BLACKHAWK! AR-15/M16 Oversized Trigger Guard is a drop-in replacement that is enlarged to allow better access to the trigger, even when wearing gloves and eliminates the need ...

An ATF agent inspected the contents of the box and recognized them as drop-in auto sears, which when installed into an AR-15 allows the weapon to fire more than one round with a single trigger ...

A factory upgrade included on many of Ruger’s top-shelf AR-platform rifles, the Elite 452 Trigger is also available from the company aftermarket—offering a marked improvement compared to the ...

This undated photo provided by the Bureau of Alcohol, Tobacco, Firearms and Explosives, shows the FRT-15 made by Rare Breed Triggers, an after-market device for AR-15-style rifles that allows them ...