Armalite AR103GN18: Purpose built for 3-gun and practical rifle competition, the AR103GN18 is ready to dominate, right from the box. A Timney 3-lb., single-stage trigger and Ergo wide grip are standard. The light weight MBA-1 buttstock is adjustable for cheekpiece and length-of-pull, and an ambidextrous safety and Raptor charging handle provide ease of operation.