Out of stock
MBX AR Modular Coupling Set (2 AR Base Pads, 1 Inter Loc), Red - mbxarcoup
Out of stock

MBX AR Modular Coupling Set (2 AR Base Pads, 1 Inter Loc), Red - mbxarcoup

SKU 410034
Brand MBX
Model Number mbxarcoup
UPC 410034
Customers must read Compliance Information before purchasing.

Product Details


  • Color: Red
  • (2) MBX AR Basepad Extensions For Gen 3 PMAG  
  • (1) MBX Inter- Loc Block 
    To be used with the MBX Inter-Lok system.
  • Joins two or more AR extension basepads.
  • MBX Inter-Loc Block allows for fast easy and tool-less assembly of two or more magazines when used in conjunction with MBX AR-15 extensions.


The MBX AR Coupling Set includes (2) MBX AR Basepad Extensions and (1) Interlock block. The Coupling Set allows you to join multiple magazines together while adding stability and capacity. This gives you a stable shooting platform and allowing you to conduct fast magazine changes.

**Must remove factory plastic clip on the magazine spring before using with MBX Modular Basepad in order to get the proper function and added capacity.


Adds Capacity:

  • - 3 Rounds for 20 PMAG
  • - 4 Rounds for 30 PMAG
  • - 5 Rounds for 40 PMAG


Q & A

Retail Stock


All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
It is the customer’s responsibility for understanding state laws regarding magazine capacities. Palmetto State Armory abides by all state regulations regarding the sale of high capacity magazines. We DO NOT ship high-capacity magazines with firearms to certain states. We WILL NOT replace high capacity magazines with state compliant magazines. We DO NOT offer refunds in place of the magazines. Please see our terms and conditions for a list or restricted states.