One of the most interesting long gun designs combines a small-caliber cartridge with a blowback action and wire stock, resulting in a compact plinking or hunting rifle for enjoyment in the outdoors.

Key point: You get what you pay for. Kel-Tec’s CMR-30 is an odd mixup of guns. While it uses the same grip and magazines from the highly similar PMR-30, it ditches the partial slide of that gun for a ...