TASER Tactical Performance Power Magazine for X1/X2/X26P Black. It has an extension to provide a larger grip but it does not hold an extra cartridge. Specifications for TASER Tactical Performance Power Magazine for X1/X2/X26P: Manufacturer: TASER Color: Black Taser Model: X2 Battery Type: Lithium Metal CR123A Features of TASER Tactical Performance Power Magazine for X1/X2/X26P For the TASER X1 and X26P they battery has approximately 500 5-second trigger-initiated firings. For the TASER X2 the battery holds approximately 250 5-second ARC switch-initiated firings. Package Contents: TASER Tactical Performance Power Magazine for X1/X2/X26P TASER 22012: Tactical Performance Power Magazine for X1/X2/X26P Black