Plus1 Magazine Bumper for Ruger® MKII™, MKIII™, MKIV™ (2-Pack)
Improve the consistency of positive magazine changes in your Ruger® MKIII and Ruger® MKIV with the Plus1 magazine bumper from TANDEMKROSS.

Plus1 Magazine Bumper for Ruger® MKII™, MKIII™, MKIV™ (2-Pack)

Part Number:1903N0013BLK1
Average Rating
On sale $19.99
Retail Price:$24.99
Your Savings:$5.00(20%)
In Stock

At a glance:

  • Increase your magazine size by 1

  • Better magazine seating

  • Installs in minutes, comes with colored installation instructions

*Includes two base pads per order.*

Don't load less ammo, load more with the TANDEMKROSS Plus1 magazine bumpers! These finely made magazine bumpers are designed to enable your factory 10-round magazines to load one extra round saving you time at the range and giving you that extra edge while trying to one up your buddies. All the while your magazines will seat better and give you that extra material to "bump" them into a locked state. Simple installation, only takes minutes to do.

These two-packs of magazine base pads work on the Mark II™, Mark III™ and Mark IV™ magazines.

Supported devices:

  • Ruger® Mark II™
  • Ruger® Mark III™
  • Ruger® Mark IV™

Warning: Cannot ship to Massachusetts, California, Connecticut, Hawaii, Maryland, New Jersey or New York. Do not purchase this item if you have a billing or shipping address associated with these locations.

Don't forget, all TANDEMKROSS products are Made in the USA and come with a LIFETIME guarantee!

5 Stars
Helped inserting the magazine a ton!
These worked right out of the box for me. Hold 11 rounds without any modifications. I really like how they extend past the bottom of the grip so that when I insert the magazines, they can be "bumped" (like a glock or other gun) to ensure that they are properly seated.
Did you find this helpful?  20 of 20 Found Helpful
Reviewed by:  from usa. on 6/12/2013
5 Stars
Really nice addition
This bumper really makes it easier to insert the magazine positively. Removal from the pistol took a little more effort initially until I got used to the bumper, but very well worth the effort. Really like the bumper and will be ordering more for the rest of my magazines.
Did you find this helpful?  19 of 19 Found Helpful
Reviewed by:  from Oregon. on 8/10/2013
5 Stars
These work fantastic right from the beginning. There was no spring modification for us and they had no loading or feeding issues. Add 1 more round to your Mark II and Mark III for added edge in your Steel Challenge, IDPA, ISPC and other shooting competitions.
Did you find this helpful?  15 of 16 Found Helpful
Reviewed by:  from NH. on 6/10/2013
5 Stars
Plus 1 Magazine bumper for Mark III
Purchased 2 of these to give them a try. Very easy installation process, functions fine and nice to have 1 additional round in the magazine. Thank you for the great products.
Did you find this helpful?  12 of 12 Found Helpful
Reviewed by: (Verified Buyer)  from Nebraska. on 1/6/2015
5 Stars
magazine bumper
easily installed, works great, fast shipping.
Did you find this helpful?  12 of 12 Found Helpful
Reviewed by:  from corpus christi tx. on 7/27/2014

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