CMMG Banshee MKG .45 ACP 5-inch Pistol, Midnight Bronze

Description

The CMMG Banshee MKG .45 ACP 5-inch Pistol in Midnight Bronze is a compact, purpose-built handgun that pairs the hard-hitting .45 ACP cartridge with a radial delayed blowback system for notably smoother recoil than traditional straight-blowback designs. Built to accept Glock-pattern .45 ACP magazines, this pistol offers a familiar manual of arms and reliable feeding. At 20.80 inches overall and with a 5-inch barrel, it splits the difference between a full-size duty gun and a pocket pistol, making it a practical choice for home defense or range work. The midnight bronze Cerakote finish adds corrosion resistance and a low-glare appearance. This is the CMMG Banshee MKG .45 ACP 5-inch Pistol, Midnight Bronze — a well-engineered firearm for shooters who value control and reliability.

Manufacturer	CMMG
Model	Banshee MKG
Material	7075-T6 aluminum upper and lower receivers, steel barrel (per manufacturer specs)
Compatibility	Glock-pattern .45 ACP magazines
Finish	Midnight Bronze Cerakote
Weight	Approx. 2.6 lbs (unloaded, per manufacturer specs)
Condition	New

Key Features

• Radial Delayed Blowback System — Reduces bolt carrier mass and softens the recoil impulse compared to straight-blowback .45 ACP pistols, allowing faster follow-up shots and less muzzle rise.
• 5-inch Barrel with 1:16 Twist — Provides sufficient barrel length for .45 ACP to reach full velocity while keeping the overall package compact for maneuverability.
• Full-Length M-LOK Handguard — Offers continuous accessory mounting slots for lights, lasers, or foregrips without adding bulk.
• Glock-Pattern Magazine Compatibility — Uses widely available, reliable Glock 21 or 30 magazines, simplifying spare magazine sourcing and reducing cost.
• Midnight Bronze Cerakote Finish — Adds a durable, low-reflectivity surface that resists wear, corrosion, and scratches, maintaining the pistol’s appearance over time.

Who It’s For

The CMMG Banshee MKG .45 ACP is designed for shooters who want a compact pistol that delivers .45 ACP power without punishing recoil. It appeals to those who already own Glock 21 or 30 magazines and prefer a familiar magazine system. It’s also a strong choice for home defense, where a short barrel and manageable recoil are valued over extreme concealability. Traditional shooters who appreciate radial delayed blowback engineering will find the platform interesting, as it offers a different feel than direct blowback .45s.

Pros and Cons

• Pro: Radial delayed blowback significantly reduces felt recoil compared to straight-blowback .45 ACP pistols, making it more controllable.
• Pro: Full-length M-LOK handguard allows customization for lights, lasers, or grips without proprietary parts.
• Pro: Uses standard Glock-pattern .45 ACP magazines, which are affordable and widely available.
• Con: The radial delayed blowback system adds some mechanical complexity and may require more thorough cleaning than a simple blowback design. Per CMMG’s own manual, keeping the bolt face and chamber clean is important for reliable function.

Comparison with Competitors

Feature	CMMG Banshee MKG .45 ACP	Zev Technologies OZ9C	Agency Arms AOS G19
Caliber	.45 ACP	9mm	9mm
Barrel Length	5 in	4.02 in	4.02 in
Operating System	Radial delayed blowback	Striker-fired, recoil-operated	Striker-fired, recoil-operated
Magazine Compatibility	Glock-pattern .45 ACP	Glock 19-pattern 9mm	Glock 19-pattern 9mm
Weight	~2.6 lbs	~1.7 lbs	~1.6 lbs
Price	~$1,682	~$1,800	~$1,750

While the Zev and Agency pistols are 9mm striker-fired options with different operating systems, the CMMG Banshee MKG stands out for its .45 ACP chambering and radial delayed blowback system, which offers a distinct shooting experience. The Banshee is slightly heavier and longer, but that weight helps manage recoil, and the 5-inch barrel gives .45 ACP a velocity advantage over shorter barrels.

FAQ

What is the barrel twist rate?

The barrel has a 1:16 twist rate, which is standard for .45 ACP and works well with typical 230-grain ball and hollow-point loads.

Can I use a suppressor with this pistol?

Yes, the 5-inch barrel is threaded (1/2×28), and the radial delayed blowback system cycles reliably with most .45 ACP suppressors. You will need a Nielsen device (piston) to ensure reliable cycling.

What Glock magazines are compatible?

This pistol accepts Glock 21 (full-size) and Glock 30 (compact) .45 ACP magazines. Both are widely available and function without modification.

Is the handguard removable or replaceable?

Yes, the handguard is attached via a barrel nut and can be swapped for any AR-15 pattern handguard that is compatible with the MkG platform. The M-LOK slots are standard.

Does this pistol come with a cleaning kit or case?

It ships in a cardboard box with a manual and one magazine. No cleaning kit is included, but we recommend a bore brush and CLP for regular maintenance.

Call to Action

The CMMG Banshee MKG .45 ACP 5-inch Pistol in Midnight Bronze is in stock and ready to ship. Add it to your cart now to secure this well-built .45 ACP pistol with radial delayed blowback technology. Browse more AR pistols or see our .45 ACP pistol collection.

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Last updated: April 2026