SKU CSSI|CA34A390FAB Category

CMMG Banshee MK4 Handgun 338 Arc 10rd Magazine 10.5” Barrel RipBrace Armor Black

CMMG Banshee MK4 Handgun 338 Arc 10rd Magazine 10.5'' Barrel RipBrace Armor Black

CMMG Banshee MK4 Handgun 338 Arc 10rd Magazine 10.5” Barrel RipBrace Armor Black

$1,609.00

2 in stock

Features:

  • Platform: Mk4
  • Caliber: .338 ARC
  • Operating System: Direct Impingement
  • Barrel Length: 10.5
  • Barrel Twist: 1:8
  • Barrel Contour: MT
  • Barrel Material: 4140CM Nitride Finish
  • Barrel Twist: 1:8
  • Muzzle Device: CMMG ZEROED Linear Compensator
  • Muzzle Thread: 5/8 x 24
  • Gas Port Location: Pistol
  • Gas Block: Non-Adjustable 0.750"
  • Upper Receiver: Mk4 Billet 6061 T6 Aluminum
  • Lower Receiver: Mk4 Forged 7075 T6 Aluminum
  • Hand Guard: EML9
  • Finish: Cerakote
  • Charging Handle: CMMG ZEROED Ambi
  • Pistol Grip: CMMG ZEROED Pistol Grip
  • Stock / Brace: CMMG RipBrace
  • Trigger Guard: CMMG ZEROED Trigger Guard
  • Magazine: (1) 10rd CMMG 338 ARC
  • Weight: 5.6 lbs
  • Length: 26"

 

Additional information

Upc

840442506582
Manufacturer

CMMG
Manufacturer part number

34A390F-AB
Action

Semi-Auto
Barrel length

10.5"
Capacity

10
Model

Banshee
Product type

AR
Safety

Ambidextrous
Shipping weight

9.505
Sights

Optics Ready

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FAQ

BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.

The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.

We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.

Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.

Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.

Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.

We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.

We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.

Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.

Yes. Depending on the request, we can help source specific products or assist with custom configurations.

Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.

Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.

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Customer Reviews

“Outstanding customer service.” I had a lot of questions before buying, and they walked me through everything without pressure. Super knowledgeable and easy to work with. You can tell they actually care about their customers.
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“Best experience I’ve had buying gear.” Professional, responsive, and honest. They helped me choose exactly what I needed without overselling anything. I’ll definitely be coming back.
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“Great people, great service.” Very down-to-earth and easy to talk to. They explain things clearly and make sure you understand your options. Highly recommend, especially if you’re new.
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