Sale

Sten Magazine Adapter for AR9/AR15

Middleton Made
SKU:
SMA-AR
$50.00 $45.00
Bulk Pricing:

Below are the available bulk discount rates for each individual item when you purchase a certain amount

  • Buy 4 or above and get 10% off
(3 reviews)
No implied warranty. Contact immediately upon receiving your order if there are manufacturing defects.
Current Stock:

Adapt your AR15 lower receiver to your AR9 upper receiver with this Sten magazine adapter. Non marring, drop in ready, and made in the USA.

 

The Sten magazine is known for its rugged build and reliability and now can feed nearly any AR9 upper receiver. Please note that depending on your bolt, you may need to remove or slightly sand the ejector but in most cases, this is a drop in conversion.

Included:

  • x1 Sten Magazine Adapter

MAGAZINE NOT INCLUDED

Reviews

  • 3
    Not as pictured

    Posted by Busterdoge on Oct 30th 2025

    The magazine adapter required extensive fitting to the magazine catch to get my magazines to lock in. Also, my magazine catch pad was slim/narrow unlike the nice wide one pictured. It’ll work and it’s priced low enough, but it could at least come as pictured and require less fitting. Haven’t done any live fire yet, but cycles by hand great with my CMMG RDB build.

  • 5
    Badass!!!!

    Posted by Kenneth Tamburro on Aug 26th 2025

    This adapter is the best! I came into a stack of sten mags and found this adapter. It works so well, a couple of my buddies are boring the same build with this adapter. It's awesome and actually less expensive than any other adapter on the market.

  • 5
    Sten adapter

    Posted by Nathan on Jul 1st 2025

    Functions flawlessly with every magazine I tried. ? I'm running it on an anderson lower and it fits excellent.