+7 round Mag Extension for PSA 5.7 Rock - Black Anodized

Excess Arms

(13 reviews) Write a Review
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Product Overview

Add 7 rounds of capacity to your PSA 5.7 Rock Magazine. Machined from 6061 aluminum and hardcoat anodized for superior wear and corrosion resistance. Extended length Magazine Spring is wound from high strength Music Wire to ensure unparalleled reliability without needlessly increasing loading force.

Magazine Extension includes:
  • Extended length magazine spring.
  • Set screws and Allen key.
  • Magazine Extension made from Billet Aluminum with Black Hardcoat anodized finish. 


DISCLAIMER: This product is not manufactured, authorized, endorsed or warranted by Palmetto State Armory. Palmetto State Armory does not warrant or represent that this product is compatible with Palmetto State Armory pistols.


(13 reviews) Write a Review

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  • 5
    bought a bunch

    Posted by DT on Dec 7th 2023

    PSA rock is a nice gun. this lets you add more to a nice gun. Win/Win build quality looks good.. so far function has been good... i can't speak to longevity of the mag extensions or the rock. as i havent owned either for a very longtime. would buy again.. but at this point i got all my mags covered and i have plenty of mags.

  • 5
    Extension for psa rock

    Posted by Sofargone69 on Dec 1st 2023

    Great product you should make some for my 1911 and im going to require a shirt from excess arms

  • 5
    Rock 5.7 mag extension

    Posted by Chris D on Nov 1st 2023

    This is a quality item. Fits around the frame and fits the magazine nicely. Quick and easy to install. I was able to easily get all 30 rounds in the magazine. I would definitely recommend this mag extension and the company. Super fast shipping also. My only complaint is that it's a little on the expense side as far as extensions go, but after seeing the quality of the extension I can see why it's priced that way.

  • 5
    quality product

    Posted by Alex on Oct 24th 2023

    The product is very well made; good quality and fits perfectly; easy to install. A youtube video on how to installed should be made.

  • 5
    5.7 mag extension

    Posted by Joshua s on Oct 11th 2023

    Love it looks good on the gun