A Hart XM3 rifle barrel has arrived! As an XM3 fan, I’ve started gathering parts to clone a DARPA XM-3 rifle (to learn more about the XM3, check out “The Darpa XM-3″ by Steve Reichert).
I’ve cloned the XM3 profile on two Shilen blanks in Countouring a Rifle Barrel Blank and How to taper a rifle barrel. This one is the real deal.
The 6 groove stainless steel 1:10 twist blank ships 22″ long, but the finished length is 18.5″. The barrel has a 1″ long section at the chamber end which will be removed (I’ve never seen a thick end on a blank like this before, but this is my first Hart barrel). The blank has a 2″ long cylinder 1.200″ in diameter that tapers to .850″ at 18.5″.
Once I gather some more parts I’ll start working on this blank.
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