Compact, fast-handling semi-auto platforms have become a core choice for tactical defense and home protection. They balance controllability, magazine capacity, and ballistic performance in a package that’s easy to maneuver in confined spaces.
CMMG BANSHEE MK4 blends modern cartridge performance with deliberate design choices: a 5.7x28mm chambering, 5″ Rec Black Nitride barrel, a 40+1 capacity, Charcoal Green Cerakote finish, synthetic CMMG 6-position Rip Brace, and a black polymer right-hand grip. 
Ballistics and Practical Applications
The 5.7x28mm cartridge is central to what makes this platform effective: it offers a flat trajectory, reduced recoil, and high magazine capacity potential. In a 5″ barrel configuration, the round delivers quick follow-up shots and controllable recoil—valuable for close-quarters defensive scenarios and rapid target transitions. The listed 40+1 capacity emphasizes sustained fire capability without frequent reloads, useful for duty or home-defense roles.
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Build, Durability, and Controls
Barrel and Finish
The Rec Black Nitride barrel provides corrosion resistance and improved surface hardness for longevity under heavy use. The Charcoal Green Cerakote finish on the receiver not only offers a tactical aesthetic but adds a layer of abrasion and weather resistance for field conditions.
Stock and Ergonomics
The synthetic CMMG 6-position Rip Brace gives the shooter multiple length-of-pull options to tune for body armor, furniture, or carriage. The black polymer right-hand grip is molded for a secure purchase and consistent trigger control. Together these features create an ergonomic platform that adapts to different users and setups. View product details and pricing
Why CMMG and This Model Matter
CMMG has built a reputation for innovative pistol-caliber platforms and quality control. The BANSHEE MK4 carries that lineage into the 5.7x28mm space, delivering a purpose-built semi-auto with a thoughtful parts package: high-capacity feeding, corrosion-resistant barrel, adjustable brace, and a finished receiver for real-world use. At a listed price of $1,817.99, it positions itself as a premium option for users seeking a specialized compact defensive rifle.
For a compact semi-auto that prioritizes controllability, capacity, and corrosion-resistant components, the CMMG BANSHEE MK4 is a focused option. Check current availability through the shop to confirm stock and shipping details. Shop this product here
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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