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Thread: OPEN 65G "Monster" Bolt Buy E $58 Shipped

  1. #21
    Bloodstained Wafavre2's Avatar
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    Thanks BTF! Received one fine looking bolt today, very pleased!

    Thanks,

    Will

  2. #22
    Warrior
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    Here is something to go with these bolts.

    https://www.deltateamtactical.com/Ge...eid=31b87f4fc4

    Need to add firing pin, bolt cam pin and cotter pin.
    Last edited by bj139; 10-13-2017 at 02:52 AM.

  3. #23
    Warrior
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  4. #24
    Warrior
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    How do these compare to the Lehigh Defense 6.5 Grendel bolts? Similar?

  5. #25
    Very similar. Except for the 6.5 Grendel "Monster" logo lasered on the side. Bwhahahaha!

    Seriously, these ARE Lehigh Defense, or more properly, Millennium Manufacturing bolts (they are sister companies). I think I put that info in my original post?
    :: 6.5 GRENDEL :: Make ARs Great Again ::

    :: I Drank the Water :: Revelation 21:6 ::

  6. #26
    Bloodstained Crippleshot1's Avatar
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    Email sent. Payment sent through PayPal
    Thank you for your efforts.

  7. #27
    Bloodstained
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    Noob question: Is it important to match the bolt with your barrel? It seems not so much with the group buys I'm seeing here. Thoughts, please?

  8. #28
    Warp: Yes and no. When firearms factories assemble a rifle, they use gauges to make sure the headspace is correct, right? They're basically making sure the "barrel matches the bolt." So when we have an enthusiast assembling his own gun, what do we do? Does he suddenly not need headspace gauges to verify proper headspace? Theoretically, yes, he does. On the other hand, these AR bolts are designed to be a mass-produced, interchangeable part. On the other hand, yet again, manufacturing variances and tolerance stack are a reality.

    In the AR homebuilding world we may not need to match a particular barrel to a particular bolt, but you do need to make damn sure your barrel is chambered for a corresponding boltface depth. You must know whether your barrel is chambered for a 0.136" boltface depth or a 0.125" boltface depth. And then you get the bolt appropriate to that depth. In that sense, you need to match bolt to barrel.

    Bottom line is the AR homebuilder would be wise to use headspace gauges to verify headspace, even with a barrel that uses the appropriate bolt, since he is now taking responsibility to act as his own firearms factory. One skips that step at his own risk.
    :: 6.5 GRENDEL :: Make ARs Great Again ::

    :: I Drank the Water :: Revelation 21:6 ::

  9. #29
    Warrior
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    This got me thinking so I did some searching and found this.

    http://www.gswagner.com/headspace/headspace.html

    He states if a case stretches upon firing more than 10 to 12 thousandths of an inch it is probably unsafe to fire.

    Since the body is stretching, measuring the case from the base to the neck, before and after firing should tell you the headspace.

    I will try to remember to take a dial caliper to the range and measure.

    I wonder if Wolf steel ammo stretches upon firing?

  10. #30
    Bloodstained
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    Thank you very much, BFT! As a first-time builder, this was one topic that I hadn't come across before. I appreciate your help! Any leads on an economical headspace gauge, or should I just ask my local armorer to check it out before firing it? (I currently have no plans to build additional ARs, but one never knows...)

    [To be clear, I've just received the stripped upper/lower and don't even have all the parts yet.]

  11. #31
    Bloodstained AZHTfreak's Avatar
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    I'm in for TWO. I'll follow this wkend with the emailed form and PayPal pmt. Thanks BFT!

  12. #32
    Bloodstained Crippleshot1's Avatar
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    Received a fine looking bolt today. Great machine work and finish.

  13. #33
    Warrior StoneHendge's Avatar
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    StoneHendge was able to figure out how to use paypal outside of eBay and is in for two!
    Kalifornicated Mindset

  14. #34
    I'll take one. Sending payment.

  15. #35
    Warrior The Profit Joseph Sith's Avatar
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    Quote Originally Posted by bj139 View Post
    Is everybody just buying 5.56 BCGs and replacing the bolts with these? That's what I have done so far but the sidechargers have a special BCG so I had to.
    A little from column a, a little from column b. I got 6 BCG's from AIM got the more milspec profile ones with the mindset of maybe one day I'll drill some holes in a few and put my own CH on them. Hopefully some time I can score a couple nice burly forged side charging uppers.

  16. #36
    Warrior
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    Quote Originally Posted by warp9764 View Post
    Noob question: Is it important to match the bolt with your barrel? It seems not so much with the group buys I'm seeing here. Thoughts, please?
    I'm new to this world too.
    If you haven't bought a barrel yet, be aware that sometimes the bolt and barrel can be purchased together as a matched set.
    Last week I ordered a complete upper and appreciate that the maker has assembled everything, checked the headspace and even fired a couple of test rounds.

  17. #37
    Chieftain
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    Quote Originally Posted by The Profit Joseph Sith View Post
    maybe one day I'll drill some holes in a few .
    A while back there was a member that tried that. He was shocked to find out he couldn’t do it.

    I don’t excactly recall what his equipment was but I think he had a killing machine and it barely scratched the bc.
    Knowing everthing isnt as important as knowing where to find it.

    Mark Twain

  18. #38
    Warrior
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    Quote Originally Posted by rabiddawg View Post
    A while back there was a member that tried that. He was shocked to find out he couldnít do it.

    I donít excactly recall what his equipment was but I think he had a killing machine and it barely scratched the bc.
    I did read somewhere that a cobalt drill bit is necessary to drill this.

    I am not sure what a killing machine is... maybe it's a 6.5 Grendel.

  19. #39
    Warrior
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    You need a Carbide drill bit for hardened steel. It will be hard to tap too.

    I've wondered if it was worth drilling and tapping a standard BCG to work with a side-charge receiver. Probably not, since Bear Creek sells them pretty cheap.

  20. #40
    Bloodstained
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    Ordered/Paid for another bolt (#2)

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