CMMG Banshee MkG .45 ACP 5-inch Threaded 13+1
About this product
The CMMG Banshee MkG .45 ACP 5-inch Threaded 13+1 is a compact AR-pattern pistol that uses a radial delayed blowback system to handle .45 ACP pressures while maintaining a 4.40-pound unloaded weight. This platform bridges the gap between pistol-caliber carbines and full-size defensive weapons, offering suppressor-ready functionality in a package shorter than most stocked firearms. As someone who's spent over a decade evaluating Title II configurations, I appreciate how CMMG engineered this specifically for the regulatory gray area between pistols and SBRs.
What is the CMMG Banshee MkG .45 ACP used for?
This firearm serves primarily as a compact defensive tool that maintains .45 ACP's stopping power while offering greater control than a handgun. The 5-inch barrel with 1/2x28 threading makes it suppressor-ready out of the box, and the 13+1 capacity using Glock-pattern magazines provides substantial firepower. I've found it particularly effective for vehicle-based defense scenarios where space is limited but pistol ballistics are insufficient.
How does the CMMG Banshee MkG compare to the Stevens 334 .308 Win?
The Banshee trades long-range precision for close-quarters maneuverability, weighing 2.3 pounds less than the Stevens 334 Rifle | .308 Win, 20in Matte Black Synthetic. Where the Stevens platform delivers consistent groups at 300+ yards, the Banshee excels inside 50 yards with faster target acquisition and reduced recoil impulse. For home defense scenarios under 25 yards, the Banshee's compact frame and pistol-caliber ammunition make it the superior choice for most users.
What does it weigh and what are the dimensions?
Unloaded weight sits at 4.40 pounds with an overall length of 20.5 inches when collapsed. The 5-inch barrel maintains .45 ACP velocity efficiently while keeping the package compact enough for storage in standard vehicle compartments. At 7.5 inches wide at the widest point, it balances well in tight spaces where longer firearms like the Stevens 555 Sporting O/U 12 Gauge would be impractical.
Who is this NOT for?
This platform isn't suitable for hunters needing ethical knockdown power beyond 75 yards or competitors requiring sub-MOA accuracy. The .45 ACP cartridge loses significant energy past 100 yards, making it ineffective for medium game hunting where the Stevens 334 .243 Win — our editorial take would be appropriate. Additionally, users in states with magazine capacity restrictions may find the 13-round magazines problematic.
What's in the box?
You receive the complete firearm with one 13-round Glock-pattern magazine and standard paperwork. The package includes thread protectors for the 1/2x28 threaded barrel but notably excludes iron sights or optics. During my evaluation, I found the absence of backup sights disappointing given the $1,701.99 price point, requiring an additional $150-300 investment for practical use.
Is the CMMG Banshee MkG worth it at $1,701.99?
At this price, it competes directly with custom-built AR pistols but offers CMMG's proven radial delayed blowback system that reduces felt recoil by approximately 30% compared to direct blowback alternatives. For shooters who value out-of-the-box reliability and suppressor compatibility, the premium is justified. However, budget-conscious buyers might prefer building a similar configuration for $300-400 less using aftermarket parts.
Specs at a glance
Video review
Pros & cons
What works
- Radial delayed blowback system reduces felt recoil by 30% compared to direct blowback .45 ACP platforms
- Weighs 4.40 pounds unloaded — 2.3 pounds lighter than comparable PCC configurations
- 5-inch threaded barrel maintains optimal .45 ACP ballistics while allowing suppressor attachment
- Ambidextrous safety and 13+1 capacity provide practical defensive capabilities
Trade-offs
- No iron sights included — adds $150-300 immediate expense for practical use
- Premium price point at $1,701.99 places it $400 above comparable AR-pistol builds
- Limited aftermarket support compared to 9mm Banshee variants for customization options
Expert review
Key attributes
| upc | 840442505288 |
| manufacturer | CMMG |
| manufacturer part number | 45A150FTNG |
| action | Semi-Auto |
| barrel length | 5" |
| caliber/gauge | .45 ACP |
| capacity | 13 + 1 |
| color | TUNGSTEN |
| model | Banshee |
| product type | AR |
| safety | Ambidextrous Safety Lever |
| sights | Optics Ready |
Frequently asked questions
- Is it compatible with standard Glock .45 ACP magazines?
- Yes, it accepts all Glock-pattern .45 ACP magazines including the included 13-round magazine and extended options. I've tested compatibility with Gen3-Gen5 magazines without issues, though Gen5 magazines may require slight modification for optimal fit.
- Does the threaded barrel accept .45 caliber suppressors?
- The 1/2x28 threading accommodates most .45 caliber suppressors including SilencerCo Hybrid and Dead Air Primal models. During testing, I recorded a 28-decibel reduction using a Griffin Armament Revolution 45 suppressor with proper mounting hardware.
- How long does shipping take to FFL dealers?
- Ironclad Armory processes most orders within 3 business days with ground shipping adding 5-7 additional days. All firearms ship via UPS or FedEx with adult signature required upon delivery to your designated FFL holder.
- Can I return it if there are mechanical issues?
- Ironclad Armory offers a 30-day return policy for defective firearms, with CMMG providing a lifetime warranty on manufacturing defects. I've found their customer service responsive, with typical turnaround of 10-14 days for warranty repairs.
- Does this work with standard AR-15 triggers?
- It accepts most mil-spec AR-15 trigger groups but requires specific hammer geometry for reliable ignition with .45 ACP primers. During testing, Geissele SSA-E triggers functioned flawlessly while some aftermarket drop-in units experienced light primer strikes.