MK4 BANSHEE™ 300BLK SEMI-PISTOL PISTOL – MK4 BANSHEE 300BLK 8”BBL 5/8X24” (1)30RD MAG BLACK

Specifications

  • Cartridge: 300 AAC Blackout
  • Finish: Armor Black
  • Weight: 8.1 lbs
  • Muzzle: Threaded
  • Stock Material: NA
  • Rear Sight: None
  • Magazine Type: Removable
  • Make/Model: AR-15, CMMG, Banshee MK4
CMMG® MK4 BANSHEE™ 300BLK SEMI-PISTOL PISTOL
 
Compact and capable, .300 BLK was designed to be right at home in AR15-pattern firearms like the CMMG® Mk4 platform. Originally created for optimum performance in subsonic, suppressed, and short-barrel applications, .300 BLK, in supersonic ammo loadings, has evolved into a popular competitor to other intermediate cartridges like 7.62×39. No matter what the application is, this BANSHEE™ is built to fit the bill.
 
The BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE® to 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.
 
Mk4 ZEROED parts and accessories – Quality comes standard
 
The AR15 platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. Everything from the RIPBRACE to the full kit of ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each BANSHEE comes equipped with a slew of ZEROED parts standard, including:
  • ZEROED Pistol Grip
  • ZEROED Drop-In Trigger
  • ZEROED Trigger Guard
  • ZEROED 60°/90° Ambi Safety
  • ZEROED AR15 Ambi Charging Handle
  • ZEROED Ambi Mag Catch
  • ZEROED Extended Mag Release Button
  • ZEROED AR15 Bolt Catch
  • ZEROED AR15 Polymer Dust Cover
  • ZEROED Linear Compensator 308 Win
SPECS
  • PLATFORM: MK4
  • CALIBER: .300 BLK
  • OPERATING SYSTEM: Direct Impingement
  • BARREL LENGTH: 8""
  • BARREL TWIST: 1:7
  • BARREL CONTOUR: MT
  • BARREL MATERIAL: 4140CM, SBN
  • MUZZLE DEVICE: CMMG ZEROED Linear Comp
  • MUZZLE THREAD: 5/8 x 24
  • GAS PORT LOCATION: Pistol
  • GAS BLOCK: 0.750"" Non-Adjustable
  • UPPER RECEIVER: Billet 6061-T6 Aluminum
  • LOWER RECEIVER: Mk4 Forged 7075-T6 Aluminum
  • HAND GUARD: CMMG EML7 M-LOK
  • FINISH: Armor Black Cerakote
  • CHARGING HANDLE: CMMG ZEROED Ambi
  • PISTOL GRIP: CMMG ZEROED Pistol Grip
  • BUFFER TYPE: Carbine
  • RECEIVER EXTENSION: CMMG 6-Position Fastback Extension
  • STOCK / BRACE: CMMG RipBrace
  • TRIGGER TYPE: ZEROED Drop-In Single Stage
  • TRIGGER GUARD: CMMG ZEROED Trigger Guard
  • SAFETY SELECTOR: CMMG ZEROED 60/90 Degree
  • MAGAZINE: Magpul 30rd PMAG
  • WEIGHT: 5.1 lbs
  • LENGTH: 23.7"
 
Description

Original price was: $1,549.95.Current price is: $1,285.00.

CMMG® MK4 BANSHEE™ 300BLK SEMI-PISTOL PISTOL
 
Compact and capable, .300 BLK was designed to be right at home in AR15-pattern firearms like the CMMG® Mk4 platform. Originally created for optimum performance in subsonic, suppressed, and short-barrel applications, .300 BLK, in supersonic ammo loadings, has evolved into a popular competitor to other intermediate cartridges like 7.62×39. No matter what the application is, this BANSHEE™ is built to fit the bill.
 
The BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE® to 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.
 
Mk4 ZEROED parts and accessories – Quality comes standard
 
The AR15 platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. Everything from the RIPBRACE to the full kit of ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each BANSHEE comes equipped with a slew of ZEROED parts standard, including:
  • ZEROED Pistol Grip
  • ZEROED Drop-In Trigger
  • ZEROED Trigger Guard
  • ZEROED 60°/90° Ambi Safety
  • ZEROED AR15 Ambi Charging Handle
  • ZEROED Ambi Mag Catch
  • ZEROED Extended Mag Release Button
  • ZEROED AR15 Bolt Catch
  • ZEROED AR15 Polymer Dust Cover
  • ZEROED Linear Compensator 308 Win
SPECS
  • PLATFORM: MK4
  • CALIBER: .300 BLK
  • OPERATING SYSTEM: Direct Impingement
  • BARREL LENGTH: 8""
  • BARREL TWIST: 1:7
  • BARREL CONTOUR: MT
  • BARREL MATERIAL: 4140CM, SBN
  • MUZZLE DEVICE: CMMG ZEROED Linear Comp
  • MUZZLE THREAD: 5/8 x 24
  • GAS PORT LOCATION: Pistol
  • GAS BLOCK: 0.750"" Non-Adjustable
  • UPPER RECEIVER: Billet 6061-T6 Aluminum
  • LOWER RECEIVER: Mk4 Forged 7075-T6 Aluminum
  • HAND GUARD: CMMG EML7 M-LOK
  • FINISH: Armor Black Cerakote
  • CHARGING HANDLE: CMMG ZEROED Ambi
  • PISTOL GRIP: CMMG ZEROED Pistol Grip
  • BUFFER TYPE: Carbine
  • RECEIVER EXTENSION: CMMG 6-Position Fastback Extension
  • STOCK / BRACE: CMMG RipBrace
  • TRIGGER TYPE: ZEROED Drop-In Single Stage
  • TRIGGER GUARD: CMMG ZEROED Trigger Guard
  • SAFETY SELECTOR: CMMG ZEROED 60/90 Degree
  • MAGAZINE: Magpul 30rd PMAG
  • WEIGHT: 5.1 lbs
  • LENGTH: 23.7"
 

4 in stock

SKU 430116870 Category

Description

CMMG® MK4 BANSHEE™ 300BLK SEMI-PISTOL PISTOL
 
Compact and capable, .300 BLK was designed to be right at home in AR15-pattern firearms like the CMMG® Mk4 platform. Originally created for optimum performance in subsonic, suppressed, and short-barrel applications, .300 BLK, in supersonic ammo loadings, has evolved into a popular competitor to other intermediate cartridges like 7.62×39. No matter what the application is, this BANSHEE™ is built to fit the bill.
 
The BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE® to 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.
 
Mk4 ZEROED parts and accessories – Quality comes standard
 
The AR15 platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. Everything from the RIPBRACE to the full kit of ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each BANSHEE comes equipped with a slew of ZEROED parts standard, including:
  • ZEROED Pistol Grip
  • ZEROED Drop-In Trigger
  • ZEROED Trigger Guard
  • ZEROED 60°/90° Ambi Safety
  • ZEROED AR15 Ambi Charging Handle
  • ZEROED Ambi Mag Catch
  • ZEROED Extended Mag Release Button
  • ZEROED AR15 Bolt Catch
  • ZEROED AR15 Polymer Dust Cover
  • ZEROED Linear Compensator 308 Win
SPECS
  • PLATFORM: MK4
  • CALIBER: .300 BLK
  • OPERATING SYSTEM: Direct Impingement
  • BARREL LENGTH: 8""
  • BARREL TWIST: 1:7
  • BARREL CONTOUR: MT
  • BARREL MATERIAL: 4140CM, SBN
  • MUZZLE DEVICE: CMMG ZEROED Linear Comp
  • MUZZLE THREAD: 5/8 x 24
  • GAS PORT LOCATION: Pistol
  • GAS BLOCK: 0.750"" Non-Adjustable
  • UPPER RECEIVER: Billet 6061-T6 Aluminum
  • LOWER RECEIVER: Mk4 Forged 7075-T6 Aluminum
  • HAND GUARD: CMMG EML7 M-LOK
  • FINISH: Armor Black Cerakote
  • CHARGING HANDLE: CMMG ZEROED Ambi
  • PISTOL GRIP: CMMG ZEROED Pistol Grip
  • BUFFER TYPE: Carbine
  • RECEIVER EXTENSION: CMMG 6-Position Fastback Extension
  • STOCK / BRACE: CMMG RipBrace
  • TRIGGER TYPE: ZEROED Drop-In Single Stage
  • TRIGGER GUARD: CMMG ZEROED Trigger Guard
  • SAFETY SELECTOR: CMMG ZEROED 60/90 Degree
  • MAGAZINE: Magpul 30rd PMAG
  • WEIGHT: 5.1 lbs
  • LENGTH: 23.7"
 

Additional information

Weight 10.3 lbs
Finish

Armor Black

Weight

8.1 lbs

Muzzle

Threaded

Stock Material

NA

Rear Sight

None

Magazine Type

Removable

Make/Model

AR-15, CMMG, Banshee MK4

Barrel Length

8''

Front Sight

None

Cartridge

CCP_300 AAC Blackout

Model

Banshee MK4

Magazine Included

1 x 30-Round

Length

3.5''

Capacity

30+1-Round

Make

AR-15, CMMG

Action Type

Semi-Auto

Safety

Thumb

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.