North American Arms Sindwinder revolver is part of the mini-revolver series chambered in .22 Magnum, that features a "swing-out" style cylinder assembly similar to most other modern revolvers. This allows easier loading and unloading, by not having to remove the cylinder from the gun. Additionally, unloading is convenient and simple with the starwheel extractor that pushes out all of the spent cartridges at once. This revolver is offered in standard .22 Magnum with an optional .22 LR conversion cylinder assembly, sold separately.