CMMG Banshee Mk4 Handgun 5.56mm 30rd Magazine 10.5" 1/2x28 Threaded Barrel Black Pistol Tube
$1,318.89
The CMMG Banshee Mk4 is a compact 5.56mm pistol featuring a 10.5″ threaded barrel, making it an excellent choice for a backpack or truck gun. Built on the Mk4 platform, it is compatible with any standard AR15 pattern upper group, enhancing its versatility and capability.
Out of stock
Available with a 10.5” barrel this is the shortest 5.56mm BANSHEE CMMG has ever offered and makes for a great choice for anyone looking for a compact backpack/truck gun in 5.56mm. If capability is what you’re after then worry no more; Built on the Mk4 platform this BANSHEE AR15 lower receiver group will work with any standard AR15 pattern upper group as well as all of CMMG’s conversion magazines (w/ matching upper group).
Available in a variety of Cerakote finish options the BANSHEE series represents the most innovative AR pistols and SBRs available today. From the stylized receivers and EML handguards every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. With full-length M-LOK slots on both sides and the bottom of the handguard as well as M-LOK between the top Picatinny rail sections you’ll always have enough space for those must-have accessories.
| Weight | 7.600 lbs |
|---|---|
| Dimensions | 41.250 × 10.250 × 3.250 in |
| Manufacturer | Cmmg Inc. |
| Barrel Length | 10.5 |
| Capacity | 30 |
| Action | Semi-automatic |
| Finish | Black |
| Frame Material | Aluminum |
| Caliber | 5.56mm |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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