This one is a Bulgarian SLR-95MB semi-automatic AK-47 style rifle made by Arsenal.  It has a tough, milled receiver and a muzzle brake.  I ordered a post-ban-legal pistol grip stock set from Soupbowl Enterprises to make it look nicer.  For a review of the kit, or to see what the gun originally looked like, click here.  Also installed is another recoil buffer from Buffer Technologies to protect the receiver from damage.