The Windham Weaponry SRC is a semi-automatic carbine chambered in .223 Rem. or 5.56 NATO. Long story short, Windham Weaponry used to be Bushmaster Arms. The owner of Bushmaster sold the company to Remington and then in early 2011, he bought it back and renamed it Windham Weaponry. Windham currently has three AR-15 carbines in their catalog. What makes the SRC unique compared to the other two (MPC and HBC) is that instead of sights it has a Picatinny rail for easy mounting of a scope or optics and it costs about $50 less.
The SRC uses a gas impingement operating system, meaning the propellant gases that push the projectile out of the bore are captured in a tube near the muzzle. The tube directs the gas backwards toward the bolt and ultimately push the bolt back and cycling the action.
Features include 6 position telescoping buttstock, which allows shooters to adjust the stock to his or her liking, and the receiver is made of 7075 T6 aircraft aluminum, which is a corrosion resistant alloy. The material was originally designed by the Japanese in the 1940s for fighter jet frames. Now it’s commonly used to make bikes, planes, boats, cars and firearms.