Alex Robinson's XCR-M makes an excellent candidate for DTI's Urban Rifle Courses!
The XCR-M Standard was designed to fire cartriges based on the 7.62 NATO (.308 Win.) round. It has a 20" long upper receiver. The Standard Upper Receiver accepts the following barrel lengths: 16", and 18.6". The barrels are available in a variety of twists in either a heavy or light contour.
John's copy has been treated by ROBAR. NP3 on all internals. Poly-T2 on the exterior. On this rifle, John prefers to have the right-side safety lever removed. Other recommendations include: