By now, you’re probably well versed in the AR-15 and all of its various chamberings. This article deals with cartridges chambered in its bigger brother. The trouble is that I’m not sure what to call it. While Colt technically owns the rights to “AR-15,” the term has become generic to describe the rifle. When you say an AR-15-type rifle, everybody knows what you mean. Armalite owns the trademark to “AR-10.” It calls its gun the AR-10, but the rest of the makers had to get creative if they wanted to avoid trouble.
DPMS calls its big-bore AR rifles LRs, as in LR-308, LR-338, etc. Even the new Gen II DPMS guns have the LR designation. Rock River Arms calls its own the LAR-8, and with JP Enterprises, it’s the LRP-07. Ruger calls its rifle the SR-762. The list goes on, and to avoid confusion, a lot of shooters just call …Read the Rest
Source:: Tactical Life