Mauser M20 SD .22 LR 10rd 4.75in Threaded Barrel

Description

The Mauser M20 SD .22 LR 10rd 4.75in Threaded Barrel is a rimfire semi-auto pistol built for training, plinking, and small game. It combines a double/single-action trigger with an ambidextrous safety and a threaded barrel for muzzle devices. This is the SD variant, meaning you get factory threading for suppressors or compensators where legal.

Manufacturer	Mauser
Model	M20 SD
Material	Steel slide, polymer frame (per manufacturer specs)
Compatibility	Mauser M20 series .22 LR magazines
Finish	Blued slide, black polymer grip
Weight	24 oz (empty, per manufacturer specs)
Condition	New

Key Features

• Threaded 4.75-Inch Barrel – Why it matters: lets you attach suppressors, compensators, or other muzzle devices for quieter shooting or reduced recoil. The 1/2×28 thread pitch is standard for .22 rimfire cans.
• Ambidextrous Slide-Mounted Safety – Why it matters: lefties and righties both get positive thumb control without switching hands. The safety locks the hammer and trigger.
• Hammer De-Cocker for DA/SA Operation – Why it matters: lowers the hammer safely from single-action to double-action, giving you a heavy first pull for carry or a light second shot for precision. The 8.5-pound DA pull is deliberate.
• Serrated Slide – Why it matters: provides a non-slip grip when racking the slide, even with sweaty or gloved hands. The serrations run full-length for positive manipulation.
• 10-Round Magazine Included – Why it matters: gives you ten shots before reloading, which is ideal for range sessions or small-game hunting. The mag drops free for quick changes.

Who It’s For

This pistol is for shooters who want a threaded .22 LR for suppressed training, pest control, or just quiet plinking. It works for lefties and righties thanks to the ambi safety. The DA/SA trigger makes it a good trainer for service pistols with similar action types.

Pros and Cons

Pros: Threaded barrel included, ambidextrous controls, DA/SA trigger with de-cocker, reliable rimfire feeding, under $300 street price.

Cons: The slide-mounted safety can be slow to reach for shooters used to frame-mounted safeties. The single 10-round magazine means you’ll want spares for extended range time.

Comparison vs Competitors

Feature	Mauser M20 SD	Zev Technologies OZ9C	Agency Arms Glock 19
Caliber	.22 LR	9mm	9mm
Barrel Length	4.75 in (threaded)	4.49 in (threaded optional)	4.02 in (threaded optional)
Action	DA/SA	Striker-fired	Striker-fired
Capacity	10+1	17+1	15+1
Weight	24 oz	25 oz	22 oz
Price	$272	$1,100+	$1,500+
Best For	Suppressed plinking, training	Competition, carry	Duty, carry

FAQ

What thread pitch is the barrel?

It uses 1/2×28 TPI, the standard for .22 LR suppressors and compensators.

Does it come with a suppressor?

No, the pistol ships with the threaded barrel only. You’ll need to purchase a suppressor separately and follow all NFA rules.

Is the safety reversible for left-hand use?

The safety is ambidextrous from the factory, so you don’t need to reverse anything. Both sides have identical levers.

How many magazines are included?

One 10-round magazine ships with the pistol. Extra mags are available separately.

Can I use high-velocity .22 LR ammo?

Yes, the M20 SD cycles reliably with standard and high-velocity .22 LR loads. Avoid subsonic rounds unless suppressed.

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Browse more in our Semi Auto Handguns or Rimfire Pistols categories. Last updated: April 2026.