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CMMG took a different approach with the Banshee line, and the philosophy sums it up nicely: don't build a .22 that looks like an AR, build an AR that happens to be chambered in .22 LR. This upper group drops onto any standard mil-spec AR-15 lower and runs CMMG's own .22 AR conversion magazines, so you keep the exact controls, grip, and trigger feel you're already used to. At just 4.5 inches, this is the shortest barrel CMMG offers in any caliber, which makes the whole package compact and easy to handle.
This is a straight blowback, dedicated rimfire setup, meaning the bolt runs entirely inside the upper and never travels back into the buffer tube. That's the reason folks who run these report solid reliability right out of the box with a wide range of ammo, no tuning or tinkering required. The barrel is 4140CM steel with a Salt Bath Nitride finish and a 1:16 twist, threaded 1/2×28 at the muzzle so you can swap the flash hider for a suppressor if you go that route. The billet 6061-T6 upper receiver wears a durable Cerakote finish and pairs with CMMG's EML4 M-LOK free-float handguard, giving you M-LOK real estate on multiple sides plus a top Picatinny rail for optics, lights, or a grip.
The appeal here is simple: cheap, high-volume trigger time on a platform that feels identical to your centerfire AR. It's a natural fit for training, backyard plinking, teaching new folks the ropes, or small pest control work around the property. It's also become a favorite host for rimfire forced reset trigger builds, since a purpose-built dedicated upper feeds and extracts more consistently than a drop-in conversion bolt stuffed into a 5.56 upper.
Everything ships ready to run, and CMMG backs it with their Lifetime Quality Guarantee against material and workmanship defects. Bolt it to a lower, load a mag, and go.
Yes. It's designed to work with any standard mil-spec AR-15 lower group, so it drops right on the same as a centerfire upper with no special tools needed. Just make sure you're running CMMG's .22 AR conversion magazines, since that's what this upper is set up to feed from.
This particular upper group ships as the complete upper with the bolt carrier group and ZEROED accessories, but it does not always include a magazine depending on the packaging. It uses CMMG's dedicated .22 AR conversion mags, so you'll want to grab at least one or two to get running. They're widely available and hold up to 25 rounds.
Generally no. Because this is a dedicated blowback .22 upper with its own bolt and recoil spring contained in the upper, most folks report it runs right out of the box across a variety of ammo. As with any rimfire, a short break-in period and sticking to quality ammo helps it run its best.
You can. The barrel is threaded 1/2×28 and the ZEROED flash hider can be removed to mount a rimfire can. A short barrel like this pairs nicely with a suppressor since it keeps the overall package compact and quiet.
| UPC | 810097502161 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 22B5BD4AB |
| Action | |
| Barrel Length | 4.5" |
| Caliber/Gauge | .22 LR |
| Shipping Weight | 2.62 |
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