directory/ammunition
The Shooters Box
MA
•The Shooters Box built their reputation on caliber adapters—stainless steel chamber reducers that let you shoot different calibers through your existing firearms. Instead of buying another gun, shoot 9MM through your 12GA shotgun. Or .45-70 through a 20GA. They stock adapters for nearly every combin...
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Full description and what we offer
The Shooters Box built their reputation on caliber adapters—stainless steel chamber reducers that let you shoot different calibers through your existing firearms. Instead of buying another gun, shoot 9MM through your 12GA shotgun. Or .45-70 through a 20GA. They stock adapters for nearly every combination: 12GA to 9MM rifled, 12GA to .357 Magnum, 16GA to 9MM, 20GA to .45-70, .410GA options, and even vintage conversions like 577/450 Martini Henry to .45 Colt or .45 ACP.
Featured YouTube reviews: > Demolition Ranch and USOG have both featured their caliber adapters, including coverage in American Rifleman magazine (August 2022).
Beyond adapters, they carry:
- •Patented ammunition reloading verification gauges for precision handloaders
- •Pellet resizers/checkers in .20, .22, .25, and .30 caliber
- •Stripper clip loading blocks for .303 British and .223/5.56mm cartridges
- •Ammunition trays (50-count plastic, 10-pack sets) for .222, .223, .300 BLK
- •Fired brass (30-06 empties available)
They stock parts and accessories from 80+ manufacturers including Wilson Combat, Magpul, Daniel Defense, Geissele Automatics, SureFire, Troy, Glock OEM parts, and specialized brands like Herrett Stocks, Champion Sights, and Ultra Dot optics.
| Category | Examples |
|---|---|
| Caliber Adapters | 12GA to 22LR ($30.95), 44 Magnum to 9MM sets ($24.95) |
| Reloading | Pellet sizers ($19.95), ammo trays ($13.50-$14.99) |
| Tactical Accessories | Solvent trap adapters, charging levers, striker tools |
| Protective Gear | Cases, magazines, grips, mounting hardware |
| Cleaning & Maintenance | Solvents, brushes, rod systems |
$9 flat-rate shipping on ALL orders — no minimums, no surprises at checkout
30-day no-hassle return policy. Free hand strike tools on orders over $50 (limited time). Orders processed quickly with straightforward checkout.
- •303 British to 32ACP adapters back in stock (was out of stock previously)
- •New product launches: 16GA to 9MM, 12GA to 450 Bushmaster, 12GA to 50AE shotgun adapters
- •EDC hand strike tools ($6.99 introductory sale, regularly $9.99)
- •Martini Henry adapters on sale (577/450 to 45 Colt regularly $69.95, now $49.95)
They've patented their reloading verification gauges and ammunition tray designs. Their shotgun adapters solve a real problem for shooters with break-open shotguns who want to practice with cheaper or different calibers. Unlike generic online retailers, they focus on niche products that serious reloaders and shooters actually need.