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1/2-28 thread/crown protector

Nick_or_Rutledge

J.A.F.O.
Supporter
Full Member
Minuteman
Jun 4, 2013
139
80
North idaho
Hey guys,

I wanted to have a thread protector that also protected the crown of the barrel for my truck gun. I made this up in FreeCAD and had shapeways print it. I used black hp nylon plastic for heat and pressure resistance. I designed it with a slight interference fit so it won't back out. It has a .300 ID to ensure plenty of clearance. Shown on a Ruger American Rimfire with a 3/4" (at the beginning of the threaded portion) threaded barrel. I put about 300 rounds .22lr through it with no issue. If you want one go here: http://shows.me/QiSX ($20)

Note: I wouldn't put this on anything more than a .22lr.

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