I got this piece a couple months ago. First time out to the range the firing pin broke after 36 rounds. Got a couple replacement pins and a new spring from Numrich/GPC and installed the new f.p. last week. Took it to the range and fired 50 rounds through the old boy. This one is early production of the model probably in 1944. It handles and shoots excellently, although a bit heavy for a pistol caliber carbine. A real "fun" gun with some history to it. It derives from the Models 50 and 55 Reisings which were issued to Marines early on in WW2, but were found to be too finicky when it came to combat conditions of mud and dirt. They did fine as guard duty and civilian/police use firearms.