PROOF Research has introduced PROOF eXponential Twist (PXT)—an advancement in rifling that improves durability, accuracy and ...

Proof Research has launched Proof Exponential Twist (PXT), an advancement in rifling that promises to improve durability, ...

[Jeff Rodriguez] has been busy testing a feasible DIY method for rifling a barrel and has found some success using salt water, a power supply, wire, and 3D printed parts to create the grooves of ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Rifling takes the form of one or ...

There have been a lot of questions about the honeycomb “Hex Fluted” barrels built by Legion Firearms. A lot of people wonder if that’s strictly an aesthetic feature or even a gimmick, others challenge ...