• Frank's Lesson's Contest

    We want to see your skills! Post a video between now and November 1st showing what you've learned from Frank's lessons and 3 people will be selected to win a free shirt. Good luck everyone!

    Create a channel Learn more
  • Having trouble using the site?

    Contact support

Gunsmithing M16 extractor conversion to BAT Machine bolts.

LRI

Lance Criminal
Full Member
Minuteman
  • Mar 14, 2010
    6,321
    7,503
    53
    Sturgis, S. Dakota
    www.longriflesinc.com
    This week we converted some Bat Machine-made bolts to M16 style. I am so grateful to have the machining resources I do here. This would have been nearly impossible to do otherwise.
    These began life as a T slot type extractor with a .545" diameter magnum bolt face. We converted them to .480" and installed our M16 type extractor.

    The party started when we discovered that Bat Machine uses a very short "nose" on some of their striker pins. This proved to be an interesting problem to solve.


    462534229_996365552295380_1865277785038170437_n.jpg
     

    Attachments

    • 462378450_2833719153472151_282663850813207757_n.jpg
      462378450_2833719153472151_282663850813207757_n.jpg
      348.3 KB · Views: 91
    • 462534226_1065529108290791_2207634237459021581_n.jpg
      462534226_1065529108290791_2207634237459021581_n.jpg
      113.2 KB · Views: 91
    • 462536054_2284320668584085_4057549134717885302_n.jpg
      462536054_2284320668584085_4057549134717885302_n.jpg
      180.4 KB · Views: 89
    • 462536634_849744860698468_3499453922821551675_n.jpg
      462536634_849744860698468_3499453922821551675_n.jpg
      462.9 KB · Views: 88
    • 462537332_1098939328245360_1688111249643238297_n.jpg
      462537332_1098939328245360_1688111249643238297_n.jpg
      471.2 KB · Views: 95
    • 462539511_539689345374791_5388752193617808084_n.jpg
      462539511_539689345374791_5388752193617808084_n.jpg
      234.8 KB · Views: 94
    • 462546011_1282744489829942_3985798265428123994_n.jpg
      462546011_1282744489829942_3985798265428123994_n.jpg
      255.3 KB · Views: 89
    • 462545325_544055791670264_1312376540739472899_n.jpg
      462545325_544055791670264_1312376540739472899_n.jpg
      102 KB · Views: 95
    • 462550720_416796967901262_7961546206854165785_n.jpg
      462550720_416796967901262_7961546206854165785_n.jpg
      367.1 KB · Views: 83
    • 462550987_1034984915043701_9080744075127229708_n.jpg
      462550987_1034984915043701_9080744075127229708_n.jpg
      586.7 KB · Views: 79
    • 462560042_509336928601744_2219353922416962744_n.jpg
      462560042_509336928601744_2219353922416962744_n.jpg
      175.1 KB · Views: 79
    • 462567471_2202656596772974_1216321214602599826_n.jpg
      462567471_2202656596772974_1216321214602599826_n.jpg
      290.2 KB · Views: 85
    That looks awesome. Are the extractors your own design? edit: meaning made in house .

    Yes. I started making my own over a decade ago in an effort to streamline the installation process. Our tempo (75-100 a month) made this pretty clear. We make our own ejector pins too. Most of the M700 bolts we do are converted to use dual ejector pins, so our burn rate on those is 2x that of extractors.
     
    Yes. I started making my own over a decade ago in an effort to streamline the installation process. Our tempo (75-100 a month) made this pretty clear. We make our own ejector pins too. Most of the M700 bolts we do are converted to use dual ejector pins, so our burn rate on those is 2x that of extractors.

    That’s awesome. Looks great!
     
    Superb! @LRI I recently had a M16 extractor installed on one of my Rem 700 actions and have concerns about it. Is the tip of the extractor supposed to be proud of the bolt nose by about .030 inch or flush? In the pictures you posted of the BAT action, it looks flush. Thanks!

    Edit: Full disclosure. This is NOT LRI's work, but it is their extractor. I purchased LRI's extractor and had a different gunsmith install it. I should have just sent it to LRI, but the new gunsmith is a friend in the PRS community and I wanted to give him some work. Mistake on my part that I won't do again.

    Rem_700_Extractor_01.jpeg


    Rem_700_Extractor_02.jpeg
     
    Last edited:
    Superb! @LRI I recently had a M16 extractor installed on one of my Rem 700 actions and have concerns about it. Is the tip of the extractor supposed to be proud of the bolt nose by about .030 inch or flush? In the pictures you posted of the BAT action, it looks flush. Thanks!

    View attachment 8530030

    View attachment 8530031

    Judging by this photo, my guess is the pin hole was drilled in the wrong location. It looks to me as though the projection of the extractor paw above the bolt nose is dern near equal to the gap between the back of it and the bolt inlet.
     
    Judging by this photo, my guess is the pin hole was drilled in the wrong location. It looks to me as though the projection of the extractor paw above the bolt nose is dern near equal to the gap between the back of it and the bolt inlet.
    Thanks for getting back to me. I will be getting the location of the hole measured by third party cmm in the next couple days. By my eyeball with my dial caliper, it appears to be about .595 to the front of the bolt lugs, which per your print should be .625. I agree that it's most likely the hole is in the wrong position. The problem is when the extractor is installed, the bolt will not close on an empty chamber. Without the extractor, it closes on an empty chamber normally. The gunsmith (I use that term lightly after getting this project back) says I just need to make the bolt nose recess deeper. I'm not a gunsmith, but I don't think that's an acceptable fix. It could expose more of the case to be unsupported. I learned that my bolt was his first M16 extractor install. I'm not a happy camper at the moment.
     
    Thanks for getting back to me. I will be getting the location of the hole measured by third party cmm in the next couple days. By my eyeball with my dial caliper, it appears to be about .595 to the front of the bolt lugs, which per your print should be .625. I agree that it's most likely the hole is in the wrong position. The problem is when the extractor is installed, the bolt will not close on an empty chamber. Without the extractor, it closes on an empty chamber normally. The gunsmith (I use that term lightly after getting this project back) says I just need to make the bolt nose recess deeper. I'm not a gunsmith, but I don't think that's an acceptable fix. It could expose more of the case to be unsupported. I learned that my bolt was his first M16 extractor install. I'm not a happy camper at the moment.
    @stevieb92 , for those who take the time to read your response, they’ll see that @LRI didn’t do the work on your bolt but are being helpful. Maybe include that info in your initial post with the pictures so folks know that isn’t LRI’s work. 👍🏻
     
    • Like
    Reactions: stevieb92
    I would save the effort of doing this with CMM. This was a pass or fail exercise for your buddy, and it's pretty clear where your at.

    Experience is never cheap.
    I'm still going to get it inspected so I have evidence that he didn't locate the hole correctly. I fear that he is going to refuse to replace my bolt or pay to have it repaired. His "fix" is cutting the bolt nose recess deeper into the barrel, which is unacceptable. It's also a high probability he won't be my buddy after this.