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

by Cmmg

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

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Retail: $40.98

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

Specifications

Manufacturer:
Cmmg
Category:
buffer
Platforms:
AR-15
Weight:
5 oz
UPC:
8227733307514
MPN:
90CA9B4
Required Component:
Yes

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Where to Buy

TLO Outdoors
In Stock
$40.98

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