help id this chopped up firearm

[reagor 1]

http://i.imgur.com/qdzaWaT.jpg
 

hey all, a buddy of mine was given this old pistol, it apears to be a chopped down rifle (stock and barrel removed) it has some proof marking that mean made in belgium...it has an thiiicckkk octogon barrel, looks like a .22lr rimfire with a breach load that had a cap with a fat firing pin in it...it is hammer fired but the thumb part of the hammer is offset to the right...any ideas...the breach plug is attached to the barrel by straps and when you hinge it up it slides out the lower half of the chamber (ejecting the spent shell?)

very crude designed action

 

 

 

[Parker 213]

Belgian Flobert parlor rifle.

[RubberBullets 65]

Sooo its an sbr? :unknw:

 

Sent from my SCH-I545 using Tapatalk 4 Beta

 

 

[phoenix_iii 0]

If it's a chopped rifle, it's a completely illegal in NJ (no SBRs).