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  • Rock Island
  • Rock Island/Para +4 Basepad - Alum - Red
  • Rock Island/Para +4 Basepad - Alum - Red
  • Rock Island/Para +4 Basepad - Alum - Red

    Rock Island/Para +4 Basepad - Alum - Red

    MSRP:
    Now: $36.99
    (You save )
    (24 reviews) Write a Review

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    Product Description

    Rock Island users have asked us for a custom basepad to match our "Fattie" magwell ever since we brought it out. This is that basepad. (Also works on Para-Ordnance P-16 and P-18.)

    • +4 capacity in 9mm or .38 Super (+2+ in .40 or 10mm) for 21+1 and sometimes 22+1 performance!
    • Can be used on a .45 -- just remove the plastic insert, or trim the "legs" of the insert.
    • Legal for USPSA, 3-Gun competition (meets the 140mm rule)
    • Works with TF "Fattie" magwell and RIA factory magwell.
    • Uses the stock spring.
    • Includes modified Arredondo Accessories insert for jam-free function beyond 18 rounds

    Note: Works with Mec-Gar Para mags, and with Rock Island mags. HOWEVER, Rock Island recently started offering magazines that are slightly longer than prior generations (notably in .40). If you are shooting USPSA events, be sure to measure your assembled mags to be sure they fit the USPSA gauge!

    Weight: 1.75 ounces
    Material: Aluminum
    Color: Red

    Note: Does not fit the Rock Island 5.0

    NOTE: Due to state department restrictions we cannot ship this part internationally.

    Product Videos

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    • Taylor Freelance Base Pad Installation Rock Island Tac Ultra

      Installation of the Taylor Freelance +4 base pads on Rock Isla...

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    Product Reviews

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    Rock Island/Para +4 Basepad - Alum - Red
    Rock Island/Para +4 Basepad - Alum - Red

    24 Reviews Hide Reviews Show Reviews

    • 5
      Perfect

      Posted by Corey Sanchez on Apr 13th 2025

      Looks and feels amazing, no issue feeding

    • 5
      Base plates

      Posted by Jim Thomas on Sep 22nd 2024

      Love them. Fit and work perfectly. Will be ordering more for my Canik. I want more parts besides the base plates for it tho.

    • 5
      10mm base pads

      Posted by Patrick "Nikk" Nicholson on Jul 27th 2024

      Fit & finish is amazing! Flawless design and easy installation… just incredible! I’m ordering some for 3 more.

    • 5
      Aluminum base pad

      Posted by Larry Dodd on Mar 25th 2024

      This product is exceptional. The quality is perfect and the anodizing is flawless!! Will be buying more to put on all my magazines.

    • 5
      Magazine extensions fattie

      Posted by Garry petrosyan on Mar 6th 2024

      The quality was superb. Worth every penny. I was making a custom .45 ACP pistol that needed a magwell. The factory handle didnt finish the way I wanted to. After in stalling the fattie magwell, the oem magazine would get burried inside magwell. So I ordered 3 fattie extensions. Now they protrude exactly where I want them. Great work and craftsmanship. thank you.

    • 5
      Baseplate

      Posted by Justin on Sep 9th 2023

      These are excellent and made with great quality. Sturdy and easy installation. Perfect function and amazing look and feel. It’s a must have addition.

    • 5
      ROCK ISLAND/PARA 140MM PLUS 4 BASEPAD - RED

      Posted by Robert Moore on Aug 22nd 2023

      Installed 4 of these and ran them on my RIA Pro Ultra Match 9mm today with zero issues. Really like the way they straighten out the mag to stand 90 degrees vertical while reloading - much better than stock design that allows fumbles. ? Have photos but don't see where I can upload them.

    • 5
      Perfect

      Posted by Vincent Bland on Apr 4th 2023

      Just what I needed to not only customize my magazines but to differentiate them from similar looking magazines

    • 5
      Magazine base

      Posted by Tom on Jul 12th 2022

      Worked great on my Rock island tac ultra Using 22 tcm mags

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