I picked up a Bubba'ed Mosin today, cut stock, sights removed, receiver D&T'ed. The receiver has me intrigued.It's an octagon receiver, and there are nearly no markings on it. There is no crest or serial #, the s/n is on the barrel. Barrel has an SY with a triangle on it. The triangle has a T in it. The receiver looks like it has an OK in a circle on the rear tang right behind the screw. There is an R on the underside of the receiver. It has 3 tapped holes on the left rail. I'll take some pics of it tomorrow in the daylight. So, what do I have?