these are shotgun adapters aka chamber reducers aka shotgun inserts and called by a few other names. they allow you to fire lower gauge (caliber) shotgun shells out of a larger bore gun. they are for use in break action type guns and won't (or shouldn't. i ...
Why is there no subcaliber small arms ammunition? - Quora
20GA to 9MM RIFLED Shotgun Adapter - Chamber Reducer - Stainless - Free Shipping | eBay
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
30-06 Rifle to .32 Cal Chamber Insert Barrel Adapter Reducer Sleeve - Oz Gun Mart
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
12GA to 9MM RIFLED Shotgun Adapter - Chamber Reducer - Stainless - Free Shipping | eBay
Gun Adapter
Caliber conversion sleeve - Wikipedia
Miniature calibre (caliber) adapters and conversions
Stack-N-Pack Kit | Shotgun Adapters - Gunadapters.com
My complete M72A2 LAW w/ M190 Subcaliber adapter and 4 35mm subcaliber rockets : r/guns
SAGE Control Ordnance, Inc
30-06 t0 308 adapter - The Firing Line Forums
30-06 to 32ACP Rifle Adapter - Chamber Reducer - Stainless
Short Lane 12 Gauge/.22LR Sub-Caliber Adapters - YouTube
Sub Caliber Adapters How? Why? - YouTube
DESTRUCTIVE DEVICES & SUB-CAL UNITS - Small Arms Review
Runway Sub-Caliber Adapters for 26.5mm Flare Guns - YouTube
Chiappa X-Cal 20 Ga Adapter Set of 4 Inserts Case
26.5 mm to 22 lr Ammo Sub-Caliber Flare Gun Insert | FTF Industries Inc Firearms Parts & Accessories
X-CALIBER Survival-Rifle Gauge Adapter System - Soldier Systems Daily
The Utility of 12-Gauge Caliber Adapters, The Good, Bad, & Ugly -The Firearm Blog
Stack-N-Pack Kit | Shotgun Adapters - Gunadapters.com
Shoot any round through any firearm with subcaliber adapters - Carolina Sportsman
