This is, to my knowledge a complete rifle minus the but pad. The small part in the bag sits between the barrel and the magazine and needs fitting. Spent some time cleaning this rifle up and trying to get it to work but never quite finished it. Bore is a little dark but should be serviceable. Pulled a bullet and it touched off the primer just fine but I have not test fired this rifle. Now I can't quite get it back together but I'm sure Someone who knows these guns can probably finish it pretty easily but I just don't have time. I believe this was the earlier version of the mod 121. $150 OBO or trades welcome.