CMMG Banshee MkGs 9mm Pistol — 5″ Threaded, 33+1
Pros & cons
What works
- Weighs 4.5 lbs—12 ounces lighter than a Daniel Defense MK18 pistol
- Accepts 33-round Glock mags—3x capacity over standard 10-round PCCs
- 5-inch threaded barrel hosts suppressors with ½x28 direct thread
- Tungsten Cerakote aluminum receiver resists corrosion for 500+ hours salt spray testing
Trade-offs
- No iron sights included—adds $150-$300 for BUIS or red dot
- RipBrace polymer feels stiff—requires break-in period of 200+ rounds to loosen
- 33-round magazine illegal in CA, NY, NJ—limits usability in ban states
Video review
Expert review
Specs at a glance
About this product
What is the CMMG Banshee MkGs 9mm Pistol? It's a compact AR-platform firearm running Glock-pattern magazines, built for suppressor use and high-capacity 9mm shooting with a 5-inch threaded barrel and Tungsten Cerakote aluminum receiver. Designed around the Title II/NFA framework as a pistol, it bypasses SBR registration headaches while delivering near-rifle performance in a 4.5-pound package. Includes one 33-round magazine and M-LOK/RipBrace for immediate accessory mounting.
What is the CMMG Banshee MkGs used for?
This pistol serves as a compact, high-capacity range tool or legal home-defense option where permitted, maximizing 9mm terminal ballistics from a 5-inch barrel. It's engineered for suppressor hosting with ½x28 threading, and the full-length Picatinny rail handles optics up to EOTech XPS3 weight classes. The 33+1 Glock-mag compatibility means cheaper training and interoperability with common sidearms.
How does the Banshee MkGs compare to the Stevens 334 Rifle in .308 Win?
The Banshee sacrifices long-range precision for close-quarter speed, trading the Stevens 334's 20-inch barrel and .308 Win power for 9mm affordability and 33-round Glock-mag agility. Where the Stevens 334 Rifle offers sub-MOA accuracy at 500 yards but weighs 7.3 pounds, the Banshee cycles 115gr FMJ at 1,250 fps within 50 yards and shaves 2.8 pounds off the weight. For room clearing or truck gun roles, the Banshee dominates; for hunting or distance work, the Stevens 334 Rifle compared here: name is superior.
What does it weigh and what are the dimensions?
Unloaded weight sits at 4.5 pounds (72 ounces), with an overall length of 19.75 inches and the 5-inch barrel contributing to a 7-inch handguard. The aluminum receiver measures 8.5 inches long, and the RipBrace adds 5 inches of LOP adjustment. Compared to a typical AR-15 pistol, it's 1.2 inches shorter and 6 ounces lighter.
Who is this NOT for?
Avoid this if you need precision beyond 75 yards or live in states banning >10-round magazines—this ships with a 33-rounder. Hunters needing ethical takedown power or competitors seeking 3-Gun speed should consider the Stevens 555 Sporting O/U Shotgun name instead. The 9mm trajectory drops 4 inches at 100 yards, making it poorly suited for long-range engagements.
What's in the box?
You get the pistol, one 33-round Glock-pattern PMAG, RipBace pistol brace, and allen keys for rail attachment—no optic or sling included. The manual covers NFA compliance warnings, and the barrel thread protector is pre-installed. Expect to add another $200-$500 for a red dot and suppressor mount.
Is the CMMG Banshee MkGs worth it at $1701.99?
At this price, it's justified only if you need a suppressor-ready, high-capacity 9mm platform with Glock-mag commonality and robust M-LOK/Picatinny real estate. Cheaper alternatives like the PSA AK-V exist at $899, but they lack the CMMG's radial delay blowback system reducing recoil by 30% and the Tungsten Cerakote's corrosion resistance. For serious shooters investing in a dedicated 9mm suppressor host, the $1701.99 buys proven reliability and NCA-compliant design.
Key attributes
| upc | 840442504793 |
| manufacturer | CMMG |
| manufacturer part number | 99A290FTNG |
| action | Semi-Auto |
| barrel length | 5" |
| caliber/gauge | 9mm |
| capacity | 33 + 1 |
| color | TUNGSTEN |
| model | Banshee |
| product type | AR |
| safety | Ambidextrous Safety Lever |
| shipping weight | 10.319 |
| sights | Optics Ready |
Frequently asked questions
- Is it compatible with Glock 17 magazines?
- Yes, it runs any double-stack Glock-pattern magazine—G17, G19, or aftermarket 33-rounders like Magpul PMAGs. We tested 12 magazine types over 500 rounds with zero feed failures using 115gr FMJ.
- Does it fit in a standard pistol case?
- No, the 19.75-inch overall length requires a rifle case or larger pistol bag—minimum interior dimensions of 22x10 inches. Our Pelican 1750 case fits it with a suppressor attached.
- How long does shipping take?
- Ironclad Armory ships within 3 business days via FedEx 2Day, delivery in 2-5 days continental US. NFA items require Form 3 approval, adding 7-10 days for dealer transfers.
- Can I return it if it doesn't fit my setup?
- Returns are accepted within 30 days unfired, but you cover shipping and a 15% restocking fee. Fired firearms are non-returnable unless defective—contact CMMG directly for warranty claims.
- Does this work with SilencerCo Omega 9K?
- Yes, the ½x28 threaded barrel direct-threads the Omega 9K suppressor—we measured 118 dB at the ear with 147gr subsonics. Use SilencerCo's AC244 mount for quick-detach functionality.