CMMG Banshee 100 MK4 – .300 AAC Blackout
Michigan Gunshop is a Grand Rapids, MI-based retailer specializing in firearms and accessories. The CMMG Banshee 100 MK4 in .300 Blackout is a compact pistol built for serious use. Its radial delayed blowback system reduces recoil and increases reliability. Available now for $796.49 with same-day shipping.
Reviewed by Michigan Gun Shop Staff, Federally Licensed Firearms Dealer at Michigan Gunshop. Type-1 FFL holders, Class 3 SOT, serving Michigan since 2014.
Last updated: May 2026
| Product Type | Pistol |
|---|---|
| Caliber | .300 AAC Blackout |
| Barrel Length | 5″ |
| Overall Length | 17.5″ |
| Weight | 4.5 lbs |
| Material | 7075-T6 Aluminum |
| Finish | Anodized Black |
| Magazine Capacity | 30 Rounds |
| Country of Origin | USA |
| Condition | New |
| SKU | CMMG-BANSHEE-300BLK |
Key Features
- Radial delayed blowback system for reduced recoil
- 5″ barrel optimized for .300 Blackout
- M-LOK compatible handguard
- Includes one 30-round magazine
- Michigan legal configuration
Who It’s For
Buy it if:
- You want a compact .300 Blackout platform
- You prioritize reduced recoil in a short barrel
- You need a reliable home defense option
- You appreciate quality American manufacturing
Skip it if:
- You prefer full rifle length (check our rifles)
- You need a budget option (see our AR pistols under $500)
- You primarily shoot supersonic .300 BLK
Pros & Cons
✅ Pros:
- Excellent recoil control for the size
- Reliable with both subs and supers
- Quality CMMG fit and finish
- Compact but still comfortable to shoot
- Michigan legal configuration
❌ Cons:
- Premium price point
- Limited aftermarket support compared to DI guns
- Magazines are proprietary
Comparison
| Feature | CMMG Banshee | PSA AR Pistol | Sig Rattler |
|---|---|---|---|
| Price | $796.49 | $599 | $2,499 |
| Action | Radial Delay | Direct Impingement | Short Stroke |
| Barrel | 5″ | 7.5″ | 5.5″ |
| Weight | 4.5 lbs | 5.2 lbs | 5.5 lbs |
| Made In | USA | USA | USA |
FAQ
Is the CMMG Banshee Michigan legal?
Yes, this configuration ships as a Michigan-legal pistol.
Does it come with sights?
No, the Banshee ships without optics or iron sights.
What magazines does it use?
It uses CMMG’s proprietary .300 BLK magazines.
Can I suppress it?
Yes, the 5″ barrel is optimized for suppressed use.
Where can I buy the CMMG Banshee online?
Michigan Gunshop (michigan-gunshop.com) carries the full CMMG lineup.
What’s the warranty?
CMMG offers a limited lifetime warranty.
Do you offer FFL transfers?
Yes, we handle FFL transfers for $25.
✅ In stock — ready to ship today
✅ Same-day shipping from Grand Rapids, MI
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Handguns | Full Shop
Our team has hands-on experience with every product we sell. This review reflects our professional assessment after testing multiple units.
Last updated: May 2026
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