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The Byrna Mission-4 is a big platform with a big appetite for gas, and these 88 gram CO2 cartridges are what keep it running the way it was built to. This two-pack drops right into the Mission-4's CO2 buttstock and delivers the sustained pressure that a high-capacity launcher like this one needs. If you shoot your Mission-4 regularly for backyard practice or keep it staged for home defense, having spare cylinders on the shelf just makes sense.
Each new cylinder is rated for around 60 rounds, which works out to roughly three full 19-round Mission-4 magazines before the pressure starts to drop off. That large gas volume is a big part of why the Mission-4 holds its velocity around 325 FPS through a string of shots instead of tapering fast the way smaller cartridges can. The extra capacity also helps in cooler weather, since there's simply more gas on tap to keep things consistent.
These are made specifically for the Mission-4 and won't work in the smaller Byrna launchers, which run on 8 gram or 12 gram cylinders instead. The 88 gram size is unique to this rifle platform, so if you own a Mission-4 this is the cartridge you're looking for. A smart habit is to leave an unpunctured cylinder seated in the buttstock and swap out any cartridge you've already pierced, since a punctured cylinder will slowly bleed off gas over time whether you're shooting or not.
Unpunctured CO2 cylinders have a very long shelf life, so buying ahead is an easy call. Running genuine Byrna cartridges also means you're getting gas that's matched to the Mission-4's seals and valve system for clean, dependable cycling. Toss a pack in your range bag and you'll never cut a session short because you ran dry.
A fresh cylinder is good for roughly 60 rounds at full speed, which lines up with about three of the Mission-4's 19-round magazines. Shot count can shift a little based on temperature and how fast you're firing. Cold weather will trim it down somewhat, while shooting closer to room temperature gets you the most out of each cartridge.
No, the 88 gram size is built specifically for the Mission-4 and won't fit the smaller platforms. Byrna pistols and compact launchers run on 8 gram or 12 gram cylinders instead. If you own a Mission-4 rifle, these are the correct cartridges for it.
It's best to leave an unpunctured cylinder seated in the CO2 buttstock and only pierce one when you're ready to shoot. A punctured cartridge slowly leaks pressure over time even when the launcher is sitting idle. Swapping out a spent or pierced cylinder helps you avoid losing gas you paid for.
Sealed, unpunctured CO2 cylinders have a very long shelf life and hold their charge for years when stored properly. That makes it easy to keep a couple of spare packs on hand without worrying about them going bad. Just keep them away from heat and store them separately from your launcher when not in use.
| UPC | 810042111677 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CO2341 |
| Length | 8.2 |
| Package Height | 1.7 |
| Package Width | 3.1 |
| Product Type | Accessory-CO2 Cartridges |
| Shipping Weight | 2.05 |
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