Mark Serbu, Gun Designer - Meet the "GB-22"! GB stands for "Gun Buyback". The pictures show a...uh....whored up version, but the basic model has only 4 parts: frame, slide barrel and spring.
The Simplest Homemade Pistol? Mark Serbu Gives the World the GB-22 "Gun Buyback Special" -The Firearm Blog
gb-22 Archives -The Firearm Blog
GB-22 однозарядный пистолет 22lr калибра из США | Пикабу
Bernardelli Model 69 pistol in .22 LR caliber | all4shooters
Any time I wonder why I couldn't... - Serbu Firearms, Inc. | Facebook
Category:Pistols | Phantom Forces Wiki | Fandom
High Standard ~ GB ~ .22 Long Rifle | Bass Pro Shops
SHOT Show 17 - SERBU Firearms GB-22 - Soldier Systems Daily