Muzzle accessory · Thread adapter
M10 to 1/2×20 Thread Adapter (3D Printed)
3D-printed adapter that converts M10×1 metric threads to 1/2×20 UNF. Use any 1/2×20 muzzle device on an older Diana/Artemis rifle.
Image credit: Airgun Archery Fun
Quick take
A small bridge piece that converts the M10×1 metric threads on Diana/Artemis rifles to the more common 1/2×20 UNF standard. Buy this if you already own a 1/2×20 muzzle device (or want access to the much wider 1/2×20 ecosystem) but your rifle is M10. 100% positive on 2 orders, 7 in stock at time of writing.
Canadian family business · Flat $17 CAD shipping
Specifications
Key specs
| Construction | 3D-printed nylon |
| Input thread (rifle side) | M10×1 metric |
| Output thread (accessory side) | 1/2×20 UNF |
| Use case | Diana/Artemis M10 rifle + 1/2×20 muzzle device |
| Buyer rating | 100% positive on 2 orders |
| Stock status | 7 left at time of writing |
The Hunt & Live take
Why this adapter earns the pick
The 1/2×20 UNF muzzle thread is the de facto standard across North American airguns and most accessories — almost every muzzle brake, thread protector, and (in the US, where they’re legal) moderator is built for 1/2×20. If your rifle is an older Diana/Artemis platform with M10×1 metric threads, you have two choices:
- Buy M10-specific accessories every time (limited selection, more expensive on average)
- Buy this adapter once, then use any 1/2×20 accessory with your rifle
For $15 or so, this is the right pick if you already own a 1/2×20 muzzle device from a previous rifle, or if you want flexibility for future accessory purchases.
What it pairs with
Rifle side (M10×1):
- Diana StormRider, Chaser, Bandit
- Snowpeak PR900 (original generation)
- Artemis PP700/PP750/PP800
- Other M10×1-threaded Diana/Artemis platforms
Accessory side (1/2×20):
- The AGS Custom Steel Blued brake in 1/2×20 thread
- The 1/2×20 3D-printed brake
- Any 1/2×20 thread protector cap
- 1/2×20 chronograph attachments (Orcair muzzle-mounted, etc.)
- 1/2×20 sound-damping inserts (where legally permitted — not in Canada)
Honest trade-offs
You’re adding a third joint to the muzzle: rifle threads → adapter → accessory. Three threaded interfaces means three opportunities for the assembly to come loose. Loctite the rifle/adapter joint if you’re not going to remove it frequently — the adapter/accessory joint stays as the breakable interface for cleaning.
The adapter is 3D-printed nylon, not steel. Same caveats as the budget brakes — repeated install cycles will wear the threads faster than a steel adapter would. For a permanent install with Loctite, this is fine. For frequent swaps, the limited steel-adapter options on other airgun sites (or having a machinist cut you one) are the durability upgrade.
If you don’t already own a 1/2×20 muzzle device, just buy the AGS in M10×1 thread directly (same product page, choose thread at checkout) and skip the adapter. The adapter pays off when you already have 1/2×20 accessories from another rifle or want maximum future flexibility.
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