It is one of the Remington Mohawk carbines. I have several of them plus 2 XP100s which is the same basic action except single shot with no magazine cut out. Great little rifles if you can find them. 1 was a 222 I rebarreled to 223, 2 are 6 mm Remington, as is one of the XP100s, another is a 308 and another was a 308 I put a heavy 6.5 Creedmoore barrel on.