Description
The Byrna Mission-4 is the big-brother of Byrna's less-lethal lineup. It was originally built for law enforcement before Byrna re-engineered it for the public, and it shows. This is a shoulder-fired, CO2-powered launcher that sends .68 caliber kinetic or pepper projectiles downrange at up to 325 fps with an effective range right around 100 feet. Running on an 88-gram CO2 cylinder, you get roughly 55 shots per fill at room temperature, and the kit ships with two 19-round coupled magazines so you've got 38 rounds ready before you ever reload.
What Sets the Mission-4 Apart
This one runs fully pneumatic, meaning no batteries and no electronics to worry about. The receiver is magnesium, so it stays light while shrugging off rough handling. Byrna built it with an AR-15 style M-LOK shroud and a quad Picatinny rail, which makes it easy to hang a light, a laser, or a grip wherever you want them. There's an included foregrip for better control, integrated sling mounts, and an anodized aluminum charging handle paired with a muzzle brake on the barrel.
Aiming and Handling the Mission-4
Folding front and rear sights come standard and flip up fast for quick target acquisition, then tuck down for storage. A two-position external safety switch keeps things simple, and the gas on/off slide valve lets you disconnect the CO2 source so the launcher can sit staged without pressure on the seals. The in-line bolt system keeps the action running smoothly shot after shot.
A Kit That's Ready to Run
What makes the Mission-4 easy to recommend is that it arrives as a complete package. You get the launcher, the CO2 adapter and stock, both coupled magazines, an accessory kit with extra o-rings, an allen key and lubricant, two 88-gram CO2 cartridges, and a padded Byrna rifle bag to carry it all. Worth noting: projectiles are sold separately, so grab a supply of .68 caliber rounds when you order so you're ready for range day or backyard practice.
Key Specifications
- Manufacturer: Byrna Technologies
- Manufacturer Part Number: BM468302
- UPC: 810042114104
- Caliber: .68
- Power Source: 88-gram CO2
- Muzzle Velocity: Up to 325 fps
- Effective Range: Up to 100 ft
- Kinetic Energy: 14.7 Joules
- Shots Per CO2 Cylinder: Up to 55 (at room temperature)
- Magazines: Two 19-round coupled magazines
- Sights: Folding (flip-up) front and rear, adjustable
- Receiver: Magnesium
- Rail System: Quad Picatinny with AR-15 style M-LOK shroud
- Safety: Two-position external safety switch
- Overall Length: 39.4 in (as packaged)
- Color: Black
What’s Included
- Mission-4 launcher
- CO2 adapter and CO2 stock
- Two 19-round coupled magazines
- Accessory kit (extra o-rings, allen key, lubricant)
- Two 88-gram CO2 cartridges
- Byrna rifle bag
Frequently Asked Questions
What CO2 does the Byrna Mission-4 use?
The Mission-4 runs exclusively on 88-gram CO2 cylinders and will not function with smaller 12-gram cartridges. A single 88-gram cylinder gives you up to around 55 shots at room temperature. The kit includes two 88-gram cartridges to get you started.
Does the Mission-4 Launcher Kit come with projectiles?
No, projectiles are not included in this kit. You'll want to pick up a supply of .68 caliber Byrna rounds separately, whether that's kinetic practice rounds or pepper projectiles. Adding a pack or two when you order means you're ready to shoot right out of the box.
How far and how fast does the Byrna Mission-4 shoot?
The Mission-4 launches .68 caliber projectiles at up to 325 fps with an effective range right around 100 feet, which is the longest reach in the Byrna lineup. It carries about 14.7 joules of kinetic energy per shot. That combination of speed and distance is a big part of why this platform stands out.
Can I add accessories to the Mission-4?
Yes. The Mission-4 features a quad Picatinny rail and an AR-15 style M-LOK shroud, so you can mount lights, lasers, grips, and other add-ons where you want them. It also comes with integrated sling mounts and an included foregrip for better handling out of the box.




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