Custom 15 Rnd Windowed Mags for RIA 10mm Pistols: +200 Base
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These magazines are compatible with the RIA OEMP164015B magazine used in the 2011-style Rock Island 10mm and /.40 pistols.  If you are the owner of a Rock Island Armory High Cap/2011 style 10mm (or .40) then you know how it is virtually impossible to find magazines for those pistols. I am a new owner of a model 52009 5" 10mm and found that out first hand so I decided to make some custom magazines.

I wrote up an extensive blog post detailing how I converted new Mec-Gar MGP164015B magazines that are made for the Para P16 pistols. This involved shortening the feed lips on these magazines. In addition, the top of every magazine had the surfaces polished in a four step process and every magazine's feed lips were fine tuned using my 52009 as the test pistol to ensure the proper feeding of the 10mm rounds - notably the last round. Note, if you have a .40 then you may need to adjust the lips - I have no way to test for that caliber.

These magazines have windows drilled in each side where the 100 round limiter used  to be.  I used these mags because it is impossible to find the MGP164015B mags now and am instead using the MGP164010B mag.   Every magazine is hand converted, tested to hold a full 15 rounds, hand loaded and unloaded to ensure there is no binding.  These mags are reliable folks and there is a perk with the windows - you can better gauge how many rounds you have left.

Just to be very clear - these are for the 15 round high-capacity 2011 10mm RIA pistols. They will not work in single stack 1911 pistols or Paras. Sorry Para P16 owners, but these mags are too modified now.  I will not accept returns if you buy this for the wrong pistol.  If you have questions - please email me.

The pistols these mags should work with:

  • 51994 TAC Ultra MS 10mm
  • 51914 TAC Ultra FS 10mm
  • 56862 TAC Ultra Threaded 10mm
  • 52000 PRO Match Ultra 6" HC 10mm
  • 52009 Rock Ultra FS HC 10mm
  • 51738 Pro Match Ultra H - 40S&W - note, I tune for 10mm as I don't have a .40 so some minor adjustments might be needed.

Every pistol is different so some final feed lip tuning may be required. The blog mentions what I did and there are videos on YouTube that outine what you need to do for a 2011.  Please note that is easy to do - click here to read a blog post about it.

I used the Mec-Gar body, follower and spring. The base plate is from Dawson Precision and is made from CNC machined aluminum.  The magazine tube may show some scratches from the machining process.

The base plates for the magazines in this listing are the +100 black models. The base plate fits almost flush with the bottom of the big mag well funnel that the RIA high cap pistols have.  As you can see in hte photos - they extend just a hair below the funnel allowing for positive seating of the magazine.

Quite a bit of time went into making these magazines hence the price but I figure that there are other guys out there who would like to have additional magazines so I took a gamble on custom making some.  Again, every single magazine is tested by me and I test each one a final time before it goes in the box to ship out.

I had to scour the WWW to find these relative few Mec-Gar magazines.  I can't guarantee that I will be able to make any new ones.

Please note, I will not ship magazines to locations listed in the USCCA magazine limit guide page. I will not ship disassembled "magazine kits" to those locations either - sorry. I can't export them either - I hate having to put all this legal stuff in but I must.  It is the buyer's responsibility to ensure compliance with all applicable laws and regulations before buying these magazines.

Please test the magazines before you need to rely on them. My liability is limited to the purchase price of the magazine and they are warranted against defects (not including any required feed lip tuning) for 30 days.

This is for one magazine - the pistol in the photos is not included.

Please do not use Paypal to purchase magazines.  Any orders that do will be cancelled.  We do take American Express, Master Card, and Visa so please use one of those methods.  Sorry - Paypal's policies do not allow for many firearms and parts transactions but we have quite a few pro-gun customers who do like to use them for other products we sell.

  • Item #: RIA10mmHiCapWindowed+200Blk

Custom 15 Rnd Windowed Mags for RIA 10mm Pistols: +200 Base

Price: $74.99
2 or more: $72.99 each
3 or more: $70.99 each
8 or more: $69.99 each
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