CMMG Banshee Mk4 Handgun .300 BLK 30rd Magazine 12.5″ 5/8×24 Threaded Barrel Black

Designed specifically for use in AR15/M4 firearms like the BANSHEE Mk4 .300 BLK not only provides ballistic performance that rivals its Russian 7.62×39 counterpart .300 BLK excels in subsonic and suppressed applications above other common calibers as well. Best of all since this BANSHEE is built on the CMMG Mk4 – AR15 platform customization and upgrades like Drop-In Triggers are only limited by your imagination.

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.

UPC

Manufacturer

Manufacturer Part Number

Action

Barrel Length

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Capacity

Length

Number of Magazines

Shipping Weight

Sights Type

State Restriction (IL)

State Restriction (OR)

State Restriction (RI)

State Restriction (WA)

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CMMG Banshee Mk4 Handgun .300 BLK 30rd Magazine 12.5″ 5/8×24 Threaded Barrel Black

$1,408.66

SKU CSSI|CA30AD60FAB Category Online or In-store: Brand:

Availability: 3 in stock

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đźšš Shipping Information

In-store or Non-restricted Items
âś… Ships directly from our us or the distributor
✅ Arrives in 3–7 business days

Restricted Items “Ships to us first”
📦 Some firearms and optics must ship to us first due to manufacturer restrictions 
⚡ Minimal delay — we ship it out as soon as we receive it
📍 Delivered to you oryour chosen local FFL
📅 Total time: 5–10 business days

Quick FAQ – Blackbox Ballistics

Prices & Sales – We price with a standard percent over cost unless MAP (Minimum Advertised Pricing) restrictions apply. We often run sales, and if you see a better price, give us a shot at meeting or beating it.

Inventory – We’re not a full brick-and-mortar store, so most items ship from distributors. Sometimes we have products in stock — especially popular firearms, ammo and optics.

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