Description
The Magpul PMAG 10 AC is purpose-built for the SIG CROSS bolt-action rifle, addressing a straightforward problem: the SIG CROSS uses a proprietary magazine interface that standard AR-10 or AICS-pattern magazines will not fit. This magazine is engineered specifically for that platform, so there is no guesswork about fitment or feed reliability.
The ten-round capacity serves hunters and precision shooters who need a flush or near-flush profile that does not interfere with a bipod, a pack, or a shooting bag. A shorter magazine sits closer to the action and keeps the rifle balanced in the field without the bulk of a higher-capacity option hanging below the stock.
Magpul constructs the body from their glass-filled polymer, which resists impact and temperature-driven dimensional changes that can cause binding or misfeeds in metal magazines. The follower geometry is designed to present each round at the correct angle for reliable chambering under the bolt-action’s feed stroke, which differs from the force and timing of a semi-automatic. The feed lips are molded into the magazine body rather than formed from sheet metal, so they hold their geometry without spreading over time.
If you run the SIG CROSS in .308 Winchester or 7.62 NATO, this is the magazine Magpul built for it. It functions in both chamberings, which share the same case dimensions and feeding geometry.




