The Rimfire Report: 40mm to 22 LR Sub-Cal AdaptersThe Firearm Blog
Subcaliber Device For .45LC / .410 Ammo
Caliber conversion sleeve - Wikipedia
Subcaliber Adapters | Load Data Article
Miniature calibre (caliber) adapters and conversions
Chiappa Firearms // 12GA Gun Gauge Adapter Rifled Insert 380ACP/7"BBL
Chamber Adapter Test – The Alex+Cap in the 257 Roberts | Bushcraft USA Forums
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
Scavenger Kit - Shotgun Adapters - Gunadapters.com
Chiappa Firearms // Gauge Adapters
EXTREMELY RARE WEBLEY-FOSBERY SUB-CALIBER ADAPTER.
84mm Sub-Calibre Training Device M525 | armscom.net
X-Caliber Shotgun Gauge Adapter System – Tactical Life Gun Magazine: Gun News and Gun Reviews
12GA to 22LR/22short RIFLED BORE Shotgun Adapter - Stainless - Free Ship & Case! | eBay
The Utility of 12-Gauge Caliber Adapters, The Good, Bad, & Ugly -The Firearm Blog
Rifle Chamber Insert
44 Magnum Adapter - Caliber Adapters - Laser Training Laser Ammo
Chiappa X-Caliber 12 Gauge Break Action Shotgun .380 ACP Caliber Conversion Adapter Steel Blued | Cheaper Than Dirt
8 MM to 32ACP Rifle Adapter - Chamber Reducer - Stainless - Free Case & Ship! | eBay
Better And Better: Subcaliber ammunition
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
Gun Adapters
The Utility of 12-Gauge Caliber Adapters, The Good, Bad, & Ugly -The Firearm Blog
