Krossfire Ruger Mark IV Bolt
TandemKross recently released their Krossfire Ruger Mark IV Bolt for Mark IV and 22/45 pistols. It builds on their experience as providers of competition-ready aftermarket parts. They’ve taken all the internal bits that they’ve had for years, and stuffed them into a custom bolt. The result is a drop-in part which improves reliability and performance. … Read more