Description
The Mauser M20 SD 22 LR is a full-size rimfire pistol built for Mauser and imported by Blue Line. This is Mauser model 4010102, UPC 689585855764: a 4.75-inch black steel barrel threaded for a rimfire suppressor, a serrated black slide, a black aluminum frame with an accessory rail, ambidextrous controls and a 10-round magazine.

Mauser M20 SD 22 LR Overview
The M20 gives you the size and feel of a modern service pistol in an affordable 22 LR package. The double-action/single-action trigger lets you practice the long first pull and shorter follow-up shots you would find on many centerfire duty guns, and the low recoil makes it easy to spot your hits and correct mistakes.
Threaded Barrel, Ready for a Can
The SD version adds a threaded muzzle so you can mount a rimfire suppressor where legal. With a can attached, the pistol is quiet enough to shoot comfortably for hours, which makes it a favorite for backyard plinking and introducing new shooters.

Picatinny Rail and Controls
The frame has a Picatinny rail under the dust cover for a light or laser. The safety and other controls are set up for both right- and left-handed shooters, and the serrated slide gives you a solid grip when racking.
DA/SA Trigger
The first shot can be fired with a long double-action pull, and each shot after that breaks from a lighter single-action pull. Practicing that transition on an inexpensive rimfire pays off when you move to a centerfire pistol with the same system.

Affordable Practice
Rimfire ammunition costs a fraction of 9mm, so you can practice drawing, sight alignment and trigger control far more often without breaking the budget.
Choosing Ammunition
Rimfire pistols run best with quality high-velocity 36 to 40 grain round nose ammunition. Try a few brands, note what feeds and groups best, then stock up. Subsonic loads can be extra quiet with a suppressor but may not cycle every pistol.
Suppressor Rules
A suppressor is a regulated item that requires an approved ATF Form 4, a tax stamp and a wait, and it is not legal in every state. The pistol works perfectly well without one, with the thread protector in place.
Cleaning and Maintenance
Clean the breech face, extractor and chamber every few hundred rounds, and keep a light coat of oil on the slide rails. Suppressed rimfires get dirty faster, so clean the barrel and can more often.
Safe Storage at Home
Whenever a handgun is not in use, keep it locked in a safe or lockbox, especially if children live in or visit your home, and store ammunition separately.
Specifications
- Manufacturer: Mauser (imported by Blue Line)
- Model: M20 SD (4010102)
- UPC: 689585855764
- Caliber: 22 LR
- Capacity: 10+1
- Action: Semi-automatic, DA/SA
- Barrel: 4.75 inches, black steel, threaded
- Slide: Black, serrated
- Frame: Black aluminum with Picatinny rail
- Controls: Ambidextrous
Before You Buy
Holster options are more limited than for popular centerfire pistols, so check fit before buying one. Please check your state and local laws before ordering; all handguns ship to your local FFL dealer.
Who It Is For
The Mauser M20 SD 22 LR is a great fit for new shooters, budget-minded practice, and owners of a rimfire suppressor who want a quiet, fun pistol.
Buy the Mauser M20 SD 22 LR at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Mauser M20 SD 22 LR online and ship it to your local FFL dealer, or browse our full selection of firearms for more handguns. For factory details, visit Mauser.







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