Yes, it's an obreyz, a sawed off MN 91/30. The thing above the PS90 (short barreled, by the way!) is a converted 37mm launcher - it's now a rifled 40mm.
All NFA items shown are legally registered. I'll take a better picture of just the NFA items... hang on.
Ok, here we go. This is minus a few items, notably my 40mm and pending items (another 40mm, three silencers, and a SBR)
Shown are (from top, R) a 10/22 short barrel, 5.5" barrel, and a 12" 304 stainless custom silencer, an MN pistol, my Stoeger 12ga "lupara", my H&R topper 12ga, my PS90 SBR, my silenced Buckmark with a 2.5" barrel, and my Remington 870 "Witness Protection" model with a 12" barrel.