Thanks to the optimized slide, the M22 OMNI works with any .22 LR standard ammunition. This ensures proper cycling of the gun without having to use HV-cartridges. The newly developed quick assembly system, enables you to mount or remove a red dot sight within seconds. The mounting plate is included with every gun. Using the M22 Omni with an optical sight may still require the use of high-velocity ammunition, due to the added weight of the sight.