North American Arms Sentinel, Single Action Only, Revolver, 22 WMR, 1.625 Barrel, Matte Finish, Silver, Rubber Grips, XS White Dot, 5 Rounds, Includes 22LR Cylinder NAA-SNT-C For years, the PUG has been a fan favorite for its look and concealability, while the Sidewinder has been popular for its ease of reload. Now, they have the solution for all parties involved: The Sentinel. With a tactical profile and an accessible cylinder pin, this little legend is destined to live in your pocket.