SIG Sauer Mosquito Sport .22 LR DA/SA Blowback Pistol, 4.9 in Barrel with Counterweight, German-Marked, 10+1
The SIG Sauer Mosquito Sport is the German-made Sport variant of the Mosquito series, chambered in .22 LR and built as a 90%-scale trainer styled after the SIG P226. This example features the longer 4.9 inch barrel with a forward counterweight nose piece and comes with its factory case, manual, and factory test target. It bears German proof marks, the two-letter barrel code "AJ," and the SIG SAUER INC. EXETER-NH importer mark.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in good condition with noticeable handling and use marks. There is a very small dent in the top of the chamber face that does not affect function. The takedown lever is able to free spin but does not impede function. The bore is clean and shiny.
What’s Included
- SIG Sauer factory plastic hard case for Mosquito Sport (labeled MOS-22-B-SPORT)
- SIG Sauer Mosquito Handling and Safety Instructions manual
- Factory test target sheet for SIG Sauer Mosquito (15 m, 5-shot)
- 1x 10-round steel single-stack magazine
The Mosquito Sport configuration adds a 4.9 inch barrel and a forward counterweight nose piece for steadier tracking and a longer sight radius. Unloaded weight is approximately 26.1 oz without the magazine, pairing a matte black slide with a black polymer frame and textured grips bearing the SIG SAUER logo.
Operation is semi-automatic, DA/SA, blowback. Controls include an ambidextrous manual safety, a decocking lever, a magazine disconnect, and an integral key-operated lock, with an exposed hammer featuring a spur. The slide integrates a slide-mounted safety and rear serrations for positive manipulation.
Sighting is via 3-dot contrast with yellow dots: interchangeable-height front blades and a windage-adjustable rear. The frame incorporates an accessory rail for mounting compatible lights or training aids.
The 1:15 in right-hand twist, 6-groove barrel is optimized for .22 LR, and capacity is 10+1 with the included single-stack magazine. Markings include German proof marks, the "AJ" barrel date code, and the SIG SAUER INC. EXETER-NH importer stamp, underscoring its German origin and import history. B