Blast Pack for Ruger® Mark IV™ and 22/45™ Instructions
At a glance:
- Radiused sear and hammer interface for clean, crisp, and repeatable trigger pull.
- Approximately 2–2.5lb trigger pull (results may vary)
- Neutrally balanced, drop-safe sear
- Highly impact and wear resistant, heat treated, S7 hardened tool steel for long-lasting, optimal performance
The TANDEMKROSS Blast Pack is a serious upgrade for all Ruger® Mark IV™ and 22/45™ owners!
Our innovative redesign of the fire control system safely reduces trigger pull weight for a performance boost and increased reliability! The lubricant coating on the hammer and sear provide a consistently smooth hammer-sear interface right out of the box. Our lightweight hammer also moves at a higher velocity leading to reduced lock time.
The Blast Shield Magazine Disconnect promotes proper magazine alignment for consistent and reliable feeding. It also protects the hammer and sear from debris and build up for easy maintenance.
Perfect for competition shooters, small game hunters, or any rimfire enthusiasts, the TK Blast Pack for Ruger® Mark IV™ and 22/45™ will bring your .22LR plinking to the next level!
This Kit Contains:
Thunder Hammer and Lightning Sear
- Safely and reliably reduces trigger pull weight
- Provides consistently clean and crisp trigger pull
- American-made and guaranteed for life
Blast Shield Magazine Disconnect
- Allows for safe removal of the magazine disconnect
- Facilitates proper magazine alignment
- Shields sear and hammer from debris
BLAST past the competition with the BEST fire control system on the market; the TANDEMKROSS Blast Pack for Ruger® Mark IV™ and 22/45™!
Support Models:
- Ruger® Mark IV™ Standard
- Ruger® Mark IV™ Hunter
- Ruger® Mark IV™ Target
- Ruger® Mark IV™ Competition
- Ruger® Mark IV™ 22/45™
- Ruger® Mark IV™ 22/45™ LITE
- Ruger® Mark IV™ Tactical
- Ruger® Mark IV™22/45™ Tactical
Looking for the Ultimate fire control upgrade? Include the TANDEMKROSS Victory for unmatched performance! Find the full package in the Ultimate Trigger Kit for Ruger® Mark IV™ or Mark IV™ 22/45™
WARNING: The Blast Pack for Ruger® Mark IV™ and 22/45™ is a match set ONLY. DO NOT use any other brand of sear and hammer with the TANDEMKROSS Blast Pack for Ruger® Mark IV™ and 22/45™
This product is protected against mechanical failure for life by TANDEMKROSS’s Lifetime Guarantee. Learn more about our warranty and returns policies here.
⚠️ WARNING: This product can expose you to chemicals including chromium, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
15 Reviews
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The best thing you can possibly do.
Everybody who owns a Ruger .22 handgun needs to know about this product. The stock trigger pull and annoying magazine disconnect need much improvement. First off, do not be intimidated by working on your gun internals. Hiring a gunsmith to do this is expensive and sometimes a long wait. Anybody with some good tools and basic skills can do it, just have lots of patience. You will make mistakes and fumble with parts, but learn lessons at the same time. Watch the excellent videos and study the printed instructions...they will get you there. These four simple parts knock down your trigger pull and eliminate the magazine disconnect. I highly recommend getting one of the triggers too. Both of my Rugers have the Blast Packs and Triggers and now have feather light pulls around 1 1/2 lbs. with no slop whatsoever. My accuracy has improved dramatically as your trigger is the key on any gun. You'll never go back to stock again and you'll preach to anyone with a Ruger .22 at the range.
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Blast Pack for Ruger mark 4
Great upgrade! Just started a rimfire league and it improved my groups dramatically.
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Installing Blast Pak
This is well worth doing. Review the on line instructions. Use the proper tools, especially the needle nose pliers, get a long skinny set. And take your time. I've had a lot of trigger practice, this took longer than I expected, but the results were worth the $75.
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TK trigger and blast pack
Nice kit(s), bought them separately. Trigger was about a 25% improvement over the Ruger factory trigger. The TK hammer and sear were huge. Nice light pull and NO creep. Utube videos were great for assembly. Great products.
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Blast Pack
Every MKIV needs this upgrade. Trigger is now very smooth and consistent. Accuracy improved dramatically.
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Awesome
Totally worth it. The blast pack along with the Victory trigger makes a good gun great.
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Order # TK- 332470
Very good product, easy assembly thanks to the video on your website. very good result at the shooting range. Thanks
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Great upgrade
The Blast Pack is a great upgrade for the Mark IV, I can really feel where the trigger is going to break now. So happy I did it.
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Great upgrade
Excellent upgrade. The steps were easy to follow on the Youtube video - but at first I thought I'd done something wrong as, once I'd finished, I couldn't cock the hammer. Stupid me - it turns out that the hammer takes a LOT of pressure to cock back (even on the little Ruger .22 pistol), so I hadn't done anything wrong - and the trigger is amazing! Well worth every cent and then some - thank you, guys.
