This is a Armalite AR known as the AR10 chambered in 308 Winchester, model AR103GN13.
Purpose built for 3-Gun and practical rifle competition" the AR103GN13's are ready to dominate" right out-of-the-box. A Timney 4-lb." single-stage trigger and Ergo wide grip come standard. The light weight MBA-1 buttstock features an adjustable cheek piece and length-of-pull. The factory ambidextrous safety and Raptor charging handle provide ease of operation for all types of shooters.
Features:
Adjustable Gas-Block
MBA-1 Buttstock
Timney Trigger
Tunable Muzzle Brake