Tandemkross

Krossfire Bolt for Ruger® Mark IV™ & 22/45™ A TandemKross Bolt with Halo Charging Handle Assembled with TandemKross Firing Pin, Extractor, and Guide Rod Includes Integral Halo Charging Ring for Improved Clearing and Charging Upgrade...

The Titan Extended Magazine Release for Ruger® Mark IV™ 22/45™ is a simple, drop-in replacement for the smaller factory magazine release, and offers significantly more surface area and height to boost the consistency and speed of magazine...

Maximus Plus1 Followers for Ruger® MK Series Magazines (2-PACK)- Replacement magazine followers that increase magazine capacity from 10 rounds to 11 rounds. The TANDEMKROSS “Maximus” Plus1 Follower for the Ruger® MK series is a drop-in upgrade...