Fire up to 30 rounds in 3.5 seconds. Engineered to elevate performance to SIG standards this patented magazine removes the limitations to firing speed in the SIG MCX and SIG MPX ASP. Using a rotary pellet drive system the SIG RPM smoothly feeds 30 rounds per belt with three refillable belts included per magazine for consistent optimized firing. Order in .177 caliber or .22 caliber. - Specs - Calibers .177 / .22 - Construction Rugged Polymer Composite - Dimensions 5 L x 2 W x 1 D
Determined at checkout.