TANDEMKROSS Ruger MKIV and MKIV 22/45 Blast Shield Installation Instructions
- Allows for safe removal of the magazine disconnect
- Facilitates proper magazine alignment
- Shields sear and hammer from debris, boosting performance
- Ruger® MKIV™ Standard
- Ruger® MKIV™ Hunter
- Ruger® MKIV™ Target
- Ruger® MKIV™ Competition
- Ruger® MKIV™ 22/45™
- Ruger® MKIV™ 22/45™ LITE
- Ruger® MKIV™ Tactical
- Ruger® MKIV™22/45™ Tactical

107 Reviews
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Works great.
Exactly as advertised. Install was easy, and it is much cleaner than a few washers.
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owner
great product,easy install, solved the Ruger magazine disconnect issue. works great
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Amateur
This is a great product and will help for a smooth trigger. Also gets rid of the hated magazine safety. Gave it four stars because fitting was required. Recommend gunsmith install.
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Mr
After installing the Victory Triger/ Volquartsen sear bundle my Mag disconnect was flaky , Safe on triger pull no fire mag inserted fire, I had intended to keep the mag disconnect, but not as if was after installing the Volquartsen parts, this replacement part is the best solution, I wish it had been offered in the bundle when I purchased mine. I recomended this bundle to my Bulseye Facebook friends. The "Blast shield" works as advertised, I consider it a must if you don't intend to replace you factory hammer, and I don't see why you would as most people couldn't tell the difference between the full Volquartsen acurizning kit and the TandemKross bundle.
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MR.
The magazine disconnect for the Ruger MKIV works as advertised and makes shooting so much more pleasant. I also installed one in my Ruger Mark III which really improved the ease of take down and reassembly by not having to keep taking the magazine in and out when removing the bolt to clean. I also installed the loaded chamber indicator on the MK III which improved the recycling and feeding.
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Retired
Product is perfect, easy install.
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Blast Sheild
This works great. It's made my Mark IV much more familiar to operate. It's also got rid of a bunch of monkey motion parts, simplifying the fire control group.
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recreational shooter
Worked exactly as intended and removed that annoying magazine disconnect.