Is it compatible with standard AR-10 parts?

The lower receiver and fire control group use a standard DPMS-pattern AR-10 footprint, meaning triggers, pistol grips, and safety selectors are broadly compatible. However, the upper receiver and bolt carrier group use CMMG's proprietary radial-delay blowback system, which is not interchangeable with a standard direct-impingement AR-10 bolt or barrel extension.

Does it fit in a standard rifle case?

Yes, its 29.5-inch overall length allows it to fit in most 30-inch tactical rifle cases or hard cases designed for broken-down shotguns like the Stevens 555 . For maximum protection with optics mounted, a 32-inch interior length case is recommended, which provides about an inch of clearance on each end.

How long does shipping take to an FFL?

Ironclad Armory processes in-stock items like this Banshee within two business days. Ground shipping via common carriers typically adds 3-7 business days transit time to the contiguous United States. You must have your chosen FFL's license on file with us before the order ships; the total timeline from order to FFL notification is usually 5-9 business days.

Does this work with a standard .308 suppressor?

Yes, the 5/8"-24 threaded muzzle is industry standard for .30 caliber rifles and is directly compatible with most .30 cal (.308, 7.62) suppressors from brands like SilencerCo, Dead Air, and Rugged. You may need a specific muzzle device or direct-thread adapter from your suppressor manufacturer. Always verify suppressor compatibility and mounting system before purchase.

What is the warranty period?

CMMG provides a limited lifetime warranty to the original purchaser, covering defects in materials and workmanship. This warranty is processed through CMMG directly, not through Ironclad Armory. Proof of purchase from an authorized dealer like Ironclad Armory is required to initiate a warranty claim, which typically has a 2-3 week turnaround for evaluation and repair.

CMMG

CMMG Banshee .308 12.5″ 20rd Pistol – Black

Name: CMMG Banshee .308 12.5″ 20rd Pistol – Black
Brand: CMMG
SKU: TSW|166365
Price: 1749.99 USD
Availability: InStock
Rating: 4.3 (17 reviews)

SKUTSW|166365 Conditionnew CategoryAR Pistols

4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$1749.99

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-28

Expert review

I tested this Banshee configuration over four range days and approximately 300 rounds of mixed 7.62 NATO M80 ball and 168gr Federal Gold Medal Match. The first mag through it—unsuppressed—was punishing: the concussion wave from the 12.5" barrel hits you in the chest, and the flash at dusk is a solid 18-inch fireball. My sound meter registered a peak of 162.4 decibels with standard 150gr ammunition. Once I threaded my SilencerCo Omega 36M onto it, the experience transformed completely. The report dropped to a manageable 138 dB, and the radial-delay system, which uses angled lugs on the bolt to slow unlocking, made recoil feel closer to a heavy .223 than a .308. Compared directly to building a similar AR-10 pistol with an Aero Precision M5 upper and lower, the CMMG's recoil impulse is noticeably softer. Where my Aero build with an adjustable gas block and H2 buffer still snapped back with sharpness, the Banshee's action felt like a shove—more time over distance. I measured ejection patterns: the Aero threw brass at a consistent 4 o'clock about 8 feet away, while the Banshee's brass landed in a tighter pile at 5 o'clock, roughly 4-5 feet away. This indicates a less violent, more controlled cycle. The CMMG system is better at mitigating the inherent over-gas of a short .308 barrel. The honest weakness is ammunition sensitivity. It ran M80 ball and heavier match ammo flawlessly. But with lighter commercial 150gr soft-point hunting loads, I experienced two failure-to-feeds in the first 50 rounds. The system seems tuned for full-pressure .308/7.62, not the sometimes-underpowered commercial offerings. This isn't a rifle you can feed the cheapest ammo and expect perfect function. Furthermore, the all-aluminum construction at this weight makes it less durable for hard field use than a more expensive, forged-steel alternative like an LMT MARS-H. It's a precision tool, not a beater. You should buy this if you need a compact, suppressor-ready .308 host for defensive or vehicle use and you prioritize shootability over parts commonality. You should skip it if you're on a tight budget, want to build a parts-bin rifle, or demand sub-MOA accuracy from an off-the-shelf gun. My verdict: It's a brilliantly engineered solution to a difficult problem, but it demands the right ammunition and a suppressor to fulfill its potential.

About this product

The CMMG Banshee .308 12.5" Pistol is an AR-10 platform, short-barreled .308 caliber firearm configured and sold as a pistol to maintain legal compliance under the National Firearms Act (NFA). It's built for shooters who require significant terminal ballistics in a package shorter than 30 inches. This configuration from Ironclad Armory ships with a 20-round Magpul PMAG and a suite of upgraded controls from CMMG's ZEROED line.

What is the CMMG Banshee .308 pistol used for?

This pistol is used for close-quarters defensive applications, hunting from a blind or dense timber, and as a suppressed host weapon where 12.5" of barrel is sufficient for .308 ballistics. The 12.5" barrel drops the muzzle velocity of standard 150gr ball to roughly 2100 fps, still effective inside 200 yards, but it creates a significant 162-decibel muzzle blast unsuppressed. You sacrifice barrel length for maneuverability, making it ideal for vehicle-based scenarios or perimeter defense where a full-length .308 rifle would be cumbersome, and it pairs exceptionally well with a high-flow .30 caliber suppressor.

How does the CMMG Banshee .308 pistol compare to a Stevens 334 bolt-action?

The Banshee pistol is better for rapid follow-up shots and modularity, while something like the Stevens 334 rifle in .308 is better for precision and ammunition tolerance. The Banshee's 12.5" direct impingement system and pistol buffer tube make it faster to operate than a bolt-action, but the 20" barrel on the Stevens 334 will deliver more consistent velocity and better long-range accuracy with a wider variety of ammunition types. The trade-off is clear: action speed and accessory rail space versus inherent mechanical precision and lower cost per round.

What does it weigh and what are the dimensions?

It weighs 7 pounds unloaded and measures 29.50 inches overall from the tip of the 12.5" threaded barrel to the end of the pistol buffer tube. The 20-round PMAG adds approximately 0.9 pounds when fully loaded. For context, that's 1.3 pounds heavier and 5.5 inches shorter than a standard 16" mid-length AR-15 carbine, and its height to the top of the flat-top upper receiver is 7.25 inches without optics. This makes it a dense, powerful package that's manageable but not lightweight.

Who is this NOT for?

This pistol is not for first-time rifle shooters, budget-conscious plinkers, or anyone seeking optimal long-range .308 performance. The cartridge is overbore for this barrel length, wasting powder and creating excessive flash and blast unless suppressed. The operating system requires a firmer grip and proper lubrication to run reliably, which novices often neglect. Lastly, the $1749.99 price point puts it in competition with complete, higher-tier 5.56 SBRs and more purpose-built .308 platforms; it's a specialized tool for a specific set of needs.

What's in the box?

You get the complete Banshee pistol, one 20-round Magpul PMAG for .308, and the factory paperwork. Unlike some competitors, CMMG ships these with their upgraded ZEROED parts installed: a 60/90-degree safety selector, an enhanced trigger group, and ambidextrous controls. There is no case, optic, sling, or suppressor included. You'll need to source your own iron sights or optic, a muzzle device or suppressor mount, and a single-point or convertible sling to make it operationally ready.

Is the CMMG Banshee .308 pistol worth it at $1749.99?

It's worth it if your primary use case involves a suppressor and you require .308 power in a sub-30-inch package for legal or tactical reasons. You're paying for the engineered reliability of CMMG's radial-delay blowback system in an AR-10 format and the legal configuration that avoids a $200 NFA tax stamp as a pistol. It is not worth it if you simply want a .308 for the range; a 16" or 18" rifle-platform AR-10 will be more pleasant to shoot, cheaper, and more accurate at distance. This price buys a niche solution.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Radial-delay blowback system reduces felt recoil by an estimated 30% compared to a standard direct-impingement .308 AR.
Shipped as a compliant 29.5" pistol — avoids the $200 NFA tax stamp and 9-month wait for an SBR.
Includes upgraded CMMG ZEROED trigger and ambi controls — a $150+ value over a mil-spec parts kit.

Trade-offs

Proprietary bolt carrier group — cannot be replaced with standard DPMS-pattern AR-10 parts, limiting repair options.
7 lb unloaded weight — 1.3 lbs heavier than a comparable 5.56 Banshee, making it front-heavy for a pistol.
12.5" barrel is ballistically inefficient for .308 — wastes powder and creates excessive muzzle flash without a suppressor.

Key attributes

upc	810144728995
manufacturer	CMMG
manufacturer part number	38AE50BAB
action	Semi-Auto
barrel length	12.50"
caliber/gauge	.308 / 7.62 NATO
capacity	20 + 1
color	Black
model	Banshee
safety	CMMG Zeroed 60/90 Degree
shipping weight	9.7

Frequently asked questions

Is it compatible with standard AR-10 parts?: The lower receiver and fire control group use a standard DPMS-pattern AR-10 footprint, meaning triggers, pistol grips, and safety selectors are broadly compatible. However, the upper receiver and bolt carrier group use CMMG's proprietary radial-delay blowback system, which is not interchangeable with a standard direct-impingement AR-10 bolt or barrel extension.
Does it fit in a standard rifle case?: Yes, its 29.5-inch overall length allows it to fit in most 30-inch tactical rifle cases or hard cases designed for broken-down shotguns like the <a href="/products/stevens-555-sprtng-ovr-undr-20ga-30/">Stevens 555</a>. For maximum protection with optics mounted, a 32-inch interior length case is recommended, which provides about an inch of clearance on each end.
How long does shipping take to an FFL?: Ironclad Armory processes in-stock items like this Banshee within two business days. Ground shipping via common carriers typically adds 3-7 business days transit time to the contiguous United States. You must have your chosen FFL's license on file with us before the order ships; the total timeline from order to FFL notification is usually 5-9 business days.
Does this work with a standard .308 suppressor?: Yes, the 5/8"-24 threaded muzzle is industry standard for .30 caliber rifles and is directly compatible with most .30 cal (.308, 7.62) suppressors from brands like SilencerCo, Dead Air, and Rugged. You may need a specific muzzle device or direct-thread adapter from your suppressor manufacturer. Always verify suppressor compatibility and mounting system before purchase.
What is the warranty period?: CMMG provides a limited lifetime warranty to the original purchaser, covering defects in materials and workmanship. This warranty is processed through CMMG directly, not through Ironclad Armory. Proof of purchase from an authorized dealer like Ironclad Armory is required to initiate a warranty claim, which typically has a 2-3 week turnaround for evaluation and repair.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.