CMMG MK9 9mm AR-15 Carbine Buffer Assembly for Carbine Receiver Extension 90CA9B4

Product Description

The CMMG MK9 AR-15 9mm Carbine Buffer Assembly is a replacement buffer designed for AR-15/M4-pattern firearms chambered in 9mm Luger that use a carbine-length receiver extension (buffer tube). It helps maintain reliable cycling in 9mm builds and is ideal for replacing worn components or completing a 9mm carbine buffer setup in a standard carbine tube.

Product Highlights

• Designed for AR-15/M4-pattern 9mm Luger builds using a carbine receiver extension
• Direct replacement buffer assembly for CMMG MK9 and similar 9mm AR variants
• Built for dependable function in standard AR-15 carbine tubes when paired with the correct spring
• Ideal for maintenance, repairs, or upgrading existing 9mm carbine buffer components
• Manufactured by CMMG for consistent fit and compatibility

Specs

• Brand: CMMG
• Manufacturer Part Number: 90CA9B4
• UPC: 815835013503
• Type: Carbine buffer assembly (9mm)
• Compatibility: AR-15 / M4-pattern firearms chambered in 9mm Luger using a carbine receiver extension
• Weight: 5 oz
• Country of Origin: United States of America
• Color: Black

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