Originally manufactured by Arsenal Inc. of Las Vegas using a stamped Bulgarian AK receiver, the SLR 107 UR was made in deliberate emulation of the "Krinkov" pattern AK carbine, with a faux silencer over the legal length barrel. This example has received a SBR conversion from R&S Arms of Silver Springs, Maryland, where the faux silencer was discarded, the barrel shortened and fitted with an adjustable flash hider/pressure chamber. More properly named the AK-74U, the Krinkov or Krink was intended to fill what is today called the "personal defense weapon" niche, for people who needed more firepower than a pistol and less bulk than a rifle; in Afghanistan, they were mostly associated with the crews of armored vehicles and helicopters (and the Mujahideen who managed to knock out a tank or chopper and take one from the wreckage). Post front and two-leaf rear sights, the latter installed on the hinge assembly for the receiver cover, the Arsenal nomenclature on the left side of the receiver, and the R&S marking on the underside. Matching numbers present on the dust cover, bolt carrier and bolt. Fitted with a ribbed forearm, a grooved pistol grip, and a side-folding steel buttstock.