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CMMG CMMG90CA9B4
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

CMMG

$34.95
Available California compliant

CMMG 9mm Carbine Buffer, Fits AR Rifles, Black 90CA9B4

Key Details
Brand CMMG
Manufacturer Part Number 90CA9B4
UPC 815835013503
SKU CMMG90CA9B4
Current Stock 12 available
Quantity Updated Apr 25, 2026 9:10 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The CMMG MK9 AR-15 9mm Carbine Buffer is a replacement buffer for AR-15's/M4's that are chambered in 9mm luger using a carbine receiver extension.

Features
  • Fits AR-15 rifles chambered in 9mm Luger/CMMG MK9 or similar pattern variant using a carbine receiver extension
Specifications
UPC: 815835013503
Manufacturer: CMMG
Manufacturer Part #: 90CA9B4
Type: Buffer