North American Arms Sidewinder .22 WMR 4 inch Stainless Single-Action Mini-Revolver, 5-Shot, Swing-Out Cylinder (NAA-SW-4)
This NAA Sidewinder is the 4-inch, magnum-only variant built for the .22 WMR cartridge. It combines a stainless steel construction with the Sidewinder's swing-out cylinder and integral ejector, offering loading and unloading without removing the cylinder. Compact, lightweight, and purpose-built, it features fixed sights, birdshead hardwood grips, and factory-published dimensions that keep it firmly in the micro-revolver category.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This revolver shows minimal signs of prior use and remains in excellent mechanical and cosmetic condition. The bore is clean and shiny.
What's Included
- North American Arms factory cardboard box with end label (NAA-SW-4)
- North American Arms steel lockbox with keyed lock
- Keys for the NAA lockbox
Built from stainless steel throughout, this Sidewinder uses a 4-inch barrel with a matte bead-blast finish and a brushed stainless frame and cylinder. The result is a cohesive, corrosion-resistant package tailored to the .22 WMR cartridge.
The Sidewinder's defining feature is its swing-out cylinder with an integral ejector, allowing loading and unloading without cylinder removal. This 5-shot, single-action configuration includes an exposed spur hammer and is magnum-only.
Fixed sights consist of a front post and an integral rear groove for a simple, durable sight picture. Smooth hardwood birdshead grips complement the revolver's micro proportions.
Factory-published dimensions underscore its compact footprint: overall length 7.5 inches, height 2.875 inches, width 1.0625 inches, and an approximate weight of 8 ounces. Markings include left-side roll marks "NORTH AMERICAN ARMS / PROVO, UT" and ".22 MAGNUM," with "SW" stamped on the frame.
This 4-inch Sidewinder variant was created to expand California availability via the single-action exemption. Made in the USA, it is cataloged under part number NAA-SW-4.




