In most cases we reccomend the standard 2 magazines per cell for a total of 6 mags. This will work with nearly all metal and polymer 'AR-15 type' mags on the market. However you can chose to 'overload' each mag cell with 3 standard capacity metal STANAGs for a total of 9 magazines.

Note: When overloading, we recommend inserting magazines in a front-to-back order, Not all polymer mags are 'overload' compatible.

AR-Adjacent platforms with similar magazines such as the 30/35 rd. 5.56 Galil, HK93, G36, and others will fit at least 6 mags, but due to the contours of some of the magazines, you might find trouble stacking more than 2 in a pouch.

Longer magazines like the 40 Round Magpul PMAG and the proprietary Steyr AUG 42-Rounders will fit with a total of 6 mags in the rig. If you're crazy and use the Surefire 60-round 'quad stack', we tested that too. each mag cell can fit 1x 60 rounder plus 1 standard capacity STANAG.

Each mag cell holds 2 magazines comfortably. Standard Capacity AKM, AK101, and AK-74 Magazines will fit just fine. Plastic, metal, and Bakelite all work, and P84 2.0 makes it much easier to re-index these mags than the previous version of this rig.

We also tested 40rd 7.62 and 45rd 5.45 RPK mags. While they physically fit inside the pouches, 7.62x39 40 rounders can't take advantage of the flap closure. Retention is acceptable thanks to the elastic, but it certainly isn't a "jumpable" configuration.

It's much the same story for 5.45 45 rounders — they fit side by side better than the x39 mags, but still can't take advantage of the flap closure.

P84 accommodates straight walled 20 round .308 mags for the AR-10, MR308, FN FAL, and SCAR-17 without issue. The rig will comfortably fit the standard 2 per cell for a total of 6 mags. For the HK G3, due to the contours of the magazine, we don't recommend double-stacking.

We've tested the much less common SCAR & FAL 30-round magazines, and they also fit without issue, even with baseplates attached.

Magazines such as those found in HK MP5s, B&T GHM/APC/TP Platforms, CZ Scorpions, Grand Power Stribogs, UZIs, Colt AR-9s, and Glock 'stick' type mags will fit, but with a catch: They must be placed side by side in order to maintain retention.

The best way to run PCC magazines for maximum retention is to place 4 in each main mag cell.

Results may vary with magazine extensions and different types of base plates. Compact pistol magazines, such as those used by the Glock 19, may be too short to use effectively in P84's main pouches, but will fit in the multitool pouches if you want to carry them on your rig.