![The extravagant interchangeable barrel, manually-operated Fiala Arms repeating pistol | all4shooters The extravagant interchangeable barrel, manually-operated Fiala Arms repeating pistol | all4shooters](https://www.all4shooters.com/en/shooting/pistols/manually-operated-fiala-arms-repeating-pistol/fiala-pistol.jpg)
The extravagant interchangeable barrel, manually-operated Fiala Arms repeating pistol | all4shooters
![The Simplest Homemade Pistol? Mark Serbu Gives the World the GB-22 "Gun Buyback Special" -The Firearm Blog The Simplest Homemade Pistol? Mark Serbu Gives the World the GB-22 "Gun Buyback Special" -The Firearm Blog](https://www.thefirearmblog.com/blog/wp-content/uploads/2016/10/GB-22-834x469.jpg)
The Simplest Homemade Pistol? Mark Serbu Gives the World the GB-22 "Gun Buyback Special" -The Firearm Blog
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.
![Concise Synthesis of GB22 by Endo-Selective Siloxycyclopropane Arylation | Organic Chemistry | ChemRxiv | Cambridge Open Engage Concise Synthesis of GB22 by Endo-Selective Siloxycyclopropane Arylation | Organic Chemistry | ChemRxiv | Cambridge Open Engage](https://chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/60c74265bb8c1a16533da0fc/largeThumb/concise-synthesis-of-gb22-by-endo-selective-siloxycyclopropane-arylation.jpg)