Beretta Magazine Models 8045/ - Cx4 Rifle .45acp 8rd

This is a factory Beretta magazine built for the 8045 Cougar pistol and the Cx4 Storm carbine chambered in .45 ACP, holding 8 rounds. It carries the JM8045 part number straight from Beretta, so shooters running either platform get the exact fit and feed geometry the gun was designed around. For anyone who shares ammunition and magazines between a Cougar sidearm and a Cx4 carbine, this is the magazine that ties both together. We stock it for owners who want original equipment rather than aftermarket guesswork, and it drops into both host firearms without modification.

Beretta builds this magazine from steel, with a follower and spring tuned to .45 ACP feeding angles across the 8-round stack. The body, follower, and floorplate are matched to the 8045 Cougar's frame dimensions and the Cx4 Storm's magazine well, which is why a factory unit feeds more predictably than generic substitutes. The 8-round count matches the original capacity Beretta specified for the platform, so it sits flush and locks the same way the factory magazine did the day the gun left the line. Per Beretta specifications, this magazine is the direct replacement listed under JM8045, sharing the same UPC and SKU you'll find referenced at the factory parts catalog. That consistency matters when you're verifying you ordered the right unit before it ships.

Keep a spare or two on hand if you carry the 8045 Cougar or run the Cx4 Storm at the range, since springs and followers wear over a long service life and rotating magazines extends that life. Shooters who feed both guns from one .45 ACP supply will find this magazine simplifies their kit. If you're outfitting other handguns or rifles, browse our full replacement magazine selection for matching factory units. Beretta owners can also pair this with a Px4 Storm .45 ACP magazine if they run more than one Beretta platform in the same caliber.