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9/26/2022 UPDATE:  THE OG IS NOW OUT OF STOCK..  I think people are realizing how much better it is than the copy cat... hahaha..  I'll have more this week.  SLS is rolling.

4/27/2022 UPDATE:  THE OG IS BACK IN STOCK.  Thanks for all the support.  Bringing this fully radiused magwell back was well needed and I aplogize for the delay.

Shooting USA UNCUT review HERE

Master USPSA shooter Chris Kozell's video HERE


Continuing our history of innovation, Shooting Sports Innovations brings you the Bottom Feeder.  Our first project... the Sig Sauer MPX Pistol Caliber Carbine.  

The only magwell in existance for the SIG MPX.  Not satisfied with low end and frankly ugly home based FDM printing, Shooting Sports Innovations has chosen to use the more costly and refined SLS Printing to bring you a product that meets our high standards.

Selective laser sintering (SLS) is an additive manufacturing technique that uses a laser as the power source to sinter powdered material (typically metal), aiming the laser automatically at points in space defined by a 3d model, binding the material together to create a solid structure.

Smoke those reloads on USPSA classifier stages and be shooting while your competition is fumbling with reloads on those monster 3 gun stages.  This magwell for your MPX is as important as ammo.  Order yours today!

BOTTOM FEEDER WARNING: Test fit both halves of the magwell on your MPX Firearm.  Using the supplied 3/32 allen key and your fingers only.. Tighten the fasteners until you feel the screw bottom out.  Do not overtighten… Do not overtighten… Do not overtighten...  If you strip out the thread insert in the Left half, don't panic.  Insert a 1/8th allen key to stop the thread insert from rotating.  This will aid in either removing or installing the magwell.


3 Reviews Hide Reviews Show Reviews

  • 5
    Fantastic online shopping experience.

    Posted by Erik Higgins on May 27th 2022

    Makes my MPX PCC look good. What a great magwell. Fastest ordering fulfillment I’ve ever experienced. Kept me updated on order. Got nice thank yous for my business. Will purchase from Shooting Sports Innovations again!

  • 5
    bottom feeder magwell

    Posted by John Westbrook on Aug 14th 2020

    I was using the bottom feeder magwell long before I was a team shooter. It makes mag changes and unloaded starts a breeze. Easily one of the best mods I have used on the MPX

  • 5
    Bottom Feeder

    Posted by BD on Aug 14th 2020

    Despite the name..being Bottom feeder you will step up your reloads on the MPX like anything but.. slam a mag in the vacinity of the opening and the mag slams home. Take your pcc game to the next level and game some classifiers with this product. It's made of an extremely durable material that has held up over a year or two of use. Much better made than the aluminum copy cat version that TTI makes. Thanks for changing the game!

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