North American Arms Sentinel 22 WMR Revolver – Proven Swing-Out 1.4in Stainless

Description

The North American Arms Sentinel 22 WMR is NAA’s answer to the biggest complaint about mini revolvers: slow reloads. It blends the square-profile barrel of the Pug with the swing-out cylinder of the Sidewinder, in a five-shot .22 Magnum built from 17-4 stainless steel.

North American Arms Sentinel 22 WMR Overview

Introduced in 2024 and sold as the NAA-SNT, the Sentinel has a 1.425 inch square barrel, measures about 4.9 inches long and 2.8 inches tall, and weighs roughly 6.7 ounces according to published reviews. An XS white-dot front sight pairs with a rear notch, and the textured rubber grip is larger than the bird’s head grips on many minis. MSRP at launch was $399 for the magnum-only model; a conversion version with a .22 LR cylinder is sold separately.

The Swing-Out Cylinder

Traditional NAA minis require you to pull the cylinder pin and remove the cylinder to reload. The Sentinel’s cylinder swings out to the side instead, and a large textured ejector rod head helps clear empties. It is still a single-action revolver loaded one round at a time, but the process is noticeably faster and you are much less likely to drop small parts in the dark.

Sights and Grip

The XS dot front sight is one of the best on any mini revolver and is easy to pick up quickly. The pebble-textured rubber grip fills the hand better than wood or pearl panels, which helps control the sharp .22 Magnum report. It is still a small gun, so most shooters will hold it with two or three fingers.

Single Action Operation

Like every NAA mini revolver, it is single action only: you cock the hammer for each shot and the spur trigger drops into place. For carry, NAA provides safety notches between the chambers so the hammer can rest between cartridges rather than on a live rim. Learn the half-cock and rest-notch procedure from the manual before you carry it.

Ammunition and Performance

The magnum-only Sentinel should be fed .22 WMR only. Loads built for short barrels give the best results from a 1.4 inch tube. Rimfire cartridges are inherently less reliable than centerfire rounds, so an occasional dud is normal; in a revolver you simply cock the hammer again to bring a fresh chamber under it. Expect more muzzle flash and noise than the cartridge would produce from a rifle.

Is It a Carry Gun?

The Sentinel is the most carry-friendly NAA mini to date thanks to its sights, grip and faster reloads. It still holds only five rimfire rounds and is single action, so many owners will treat it as a backup or deep-concealment option. Holster selection is still growing; look for pocket holsters cut specifically for the Sentinel.

State Laws and Ownership

Mini revolvers are legal in most states, but a few jurisdictions add their own hurdles. California and Massachusetts only allow sales of models on their approved handgun rosters, and several states require a purchase permit or firearm ID card first. Pennsylvania buyers complete a PICS check at the receiving dealer. Carry rules also differ widely, so confirm your state and local laws, including permit reciprocity, before you carry it.

Specifications

• Model: NAA-SNT Sentinel
• Caliber: .22 WMR (.22 Magnum)
• Capacity: 5 rounds
• Barrel: 1.425 in. square profile
• Overall length: about 4.9 in.
• Height: about 2.8 in.
• Weight: about 6.7 oz. (published review figure)
• Action: single action, swing-out cylinder
• Sights: XS white-dot front, express rear notch
• Grip: pebble-textured rubber
• Material: 17-4 stainless steel
• UPC: 744253003714

Before You Buy

Federal law requires handgun buyers to be at least 21 years old and to complete the transfer through a licensed dealer, including the ATF Form 4473 and a background check. We ship this revolver to the FFL you choose, never to a home address. Inspect it at pickup, read the owner manual before loading it, and keep it stored where children and unauthorized users cannot reach it.

Who It Is For

The North American Arms Sentinel 22 WMR is a great fit for pocket-carry shooters who like NAA minis but want better sights, a fuller grip and faster reloads.

Buy the North American Arms Sentinel 22 WMR at MAG5 Firearms

MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the North American Arms Sentinel 22 WMR online and ship it to your local FFL dealer, or browse our full selection of firearms for more revolvers. For factory details, visit North American Arms.