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There are a lot of 9mm AR pistols out there, and most of them run a straight blowback system. It gets the job done, but it comes with a heavy bolt, a snappy recoil impulse, and a generally unpleasant shooting experience compared to what the platform is capable of. CMMG took a different route with the Banshee MKGs. Their patented Radial Delayed Blowback system uses a rotating bolt with chamfered lugs that hold the breech closed until chamber pressure drops, similar in concept to a standard AR bolt but adapted for gasless operation. The result is a meaningfully lighter bolt carrier group and a recoil signature that shooters consistently describe as smoother and flatter than anything else in its class. It runs reliably across common 9mm loads from 115 to 147 grain, suppressed or unsuppressed.
The MKGs designation is important here. Unlike 9mm ARs that use a magazine adapter stuffed into a standard AR lower, the Banshee MKGs has a dedicated lower receiver built specifically to feed from double-stack Glock-pattern magazines natively. That means G17 and G19 compatible mags drop right in, including the included 33-round magazine. Last-round bolt hold open works exactly as you'd expect on an AR, and the flared magwell makes reloads clean and repeatable. The upper is built from billet 6061-T6 aluminum, and the lower from forged 7075-T6, keeping weight down while maintaining durability. The 5-inch barrel is finished in black nitride with a medium taper profile and threaded 1/2×28 for suppressors or muzzle devices.
CMMG decks this pistol out with their full ZEROED parts package standard. That includes an ambidextrous charging handle, a 60/90 degree ambi safety selector, a drop-in single-stage trigger, ZEROED pistol grip, bolt catch, dust cover, and a 9mm linear compensator on the muzzle. The EML4 handguard runs M-LOK slots at the 3, 6, and 9 o'clock positions plus a full-length Picatinny top rail, and it includes an integrated handstop. The RipBrace pistol brace deploys quickly and offers six positions of adjustment. The upper receiver is optics-ready with no sights included, so throw on your preferred red dot and go. The bi-tone finish pairs a Midnight Bronze Cerakote receiver with the Satin Black Cerakote barrel for a look that's distinctly Banshee. Every CMMG product is covered by their Lifetime Quality Guarantee against material and workmanship defects.
Most 9mm AR pistols use straight blowback, which requires a heavy bolt to keep the breech closed long enough during firing. CMMG's Radial Delayed Blowback uses a rotating bolt with chamfered lugs that physically delay the opening of the action until pressure has dropped, allowing for a significantly lighter bolt carrier group. In practice this means less reciprocating mass, a softer and more spread-out recoil impulse, and a more controllable shooting experience. It also plays well with suppressors, since the delayed system doesn't dump excess back-pressure the way straight blowback designs can.
The MKGs platform is built specifically for double-stack 9mm Glock-pattern magazines, meaning G17 and G19 compatible mags feed natively without any adapter. The included magazine is a 33-round Glock-compatible mag. Standard factory Glock 17 and 19 magazines, as well as most aftermarket Glock-pattern 9mm mags, are compatible with the platform.
No, this model ships without any sights installed. The flat-top upper receiver is optics-ready with a full-length Picatinny rail, so it's set up for a red dot or compact scope right out of the box. Given the 5-inch barrel and compact overall size, a red dot is the natural pairing for most uses.
Yes. The barrel is threaded 1/2×28, which is the standard thread pitch for 9mm suppressors, and the pistol ships with a CMMG ZEROED linear compensator already installed. Remove the comp, thread on a compatible suppressor, and the Radial Delayed Blowback system's design actually lends itself to cleaner suppressed operation compared to straight blowback guns, which tend to be more affected by back-pressure buildup.
CMMG's ZEROED parts suite comes standard and covers the controls you'd otherwise have to source separately. That includes an ambidextrous charging handle, a 60/90 degree ambi safety selector, a drop-in single-stage trigger, ZEROED pistol grip, bolt catch, polymer dust cover, and the 9mm linear compensator. All of it is made in the USA and covered under CMMG's Lifetime Quality Guarantee.
The CMMG RipBrace is a 6-position polymer pistol brace that deploys quickly without requiring you to press a release button. You can pull it to any position along the tube freely, which makes one-handed or rapid deployment practical. It keeps the overall package compact while giving you a stable rear contact point when shouldering for precision shooting at the range.
| UPC | 840442504762 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 99A290F-MB |
| Action | |
| Barrel Finish | Satin Black Cerakote |
| Barrel Length | 5" |
| Caliber/Gauge | 9mm |
| Capacity | 33 + 1 |
| Color | BI-TONE |
| Length | 40.2000 |
| Model | |
| Number of Magazines | 1 |
| Product Type | AR |
| Safety | CMMG Zeroed 60/90 Degree |
| Shipping Weight | 9.12 |
| Sights | Optics Ready |
| Sights Type | NONE |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Thread Pattern | 1/2"x28 |
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