- Joined
- Dec 3, 2013
- Messages
- 1,844
I have been working on a PRS rifle build on and off for a couple of years as time permits. I wasn't happy with my original CNC chassis I was making and decided to switch gears and go another direction. I have always wanted to build a Tube Gun so I went that route. Anyway I'm far enough along it's time to chamber and fit the barrel. I have previously trued the M700 action and fitted a new PT&G bolt. I went to install the extractor for the barrel fitting and discovered that PT&G sent me a bolt with the wrong extractor cutout. I had ordered it with a M16 extractor and it came cut for a Mini M16 extractor. Even worse they sent me a Seko extractor.
I've had the bolt for over a year so my bad for not checking. I have already timed and welded the bolt handle on so no going back. PT&G doesn't stock the Mini M16 extractor so it is a couple month lead time. I tried modifying a Badger M16 extractor but the pivot hole on the bolt is further back than the Badger extractor so when fitted it was not forward enough to catch the case rim.
The only solution at this point was to make an extractor. Between the bolt and the Badger extractor I was able to get the basic dimensions. To get the outer radius that matches the bolt I turned a piece of tool steel to the bolt diameter then parted to length. The plug was rough bored to be later milled and the chamfer and groove for the case rim were cut.
With the plug mounted in the mill the extractor was cut to width.
The balance of the machining was milling the back side to thickness, drilling the pivot & spring holes and filing in the rear radius.
Extractor installed.
I've had the bolt for over a year so my bad for not checking. I have already timed and welded the bolt handle on so no going back. PT&G doesn't stock the Mini M16 extractor so it is a couple month lead time. I tried modifying a Badger M16 extractor but the pivot hole on the bolt is further back than the Badger extractor so when fitted it was not forward enough to catch the case rim.
The only solution at this point was to make an extractor. Between the bolt and the Badger extractor I was able to get the basic dimensions. To get the outer radius that matches the bolt I turned a piece of tool steel to the bolt diameter then parted to length. The plug was rough bored to be later milled and the chamfer and groove for the case rim were cut.
With the plug mounted in the mill the extractor was cut to width.
The balance of the machining was milling the back side to thickness, drilling the pivot & spring holes and filing in the rear radius.
Extractor installed.
