Little Jack's Stuff for Sale to include 300blk conversions
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Thread: Little Jack's Stuff for Sale to include 300blk conversions

  1. #1
    XCR Guru navalbeaver's Avatar
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    Little Jack's Stuff for Sale to include 300blk conversions

    XCR-L: Pistol 300blk 9.3" Standard length Keymod upper, black, pistol cap. PM for price

    300blk conversions: $545 shipped
    9.3 Micro

    Trigger groups (trigger, hammer, disconnect) $115
    Heavy Hammer springs $6
    Ambi mag release for square nose lowers (upgrade) $48
    Recoil spring assembly $38
    Op rod Mini or Standard $68
    Firing pins $12
    Gas tube micro or mini $14
    Recoil Buffer $9
    Bolt hold open $16

    XCR-L COMMON PARTS KIT $45
    (Buffer, hammer axis cotter pin, main pin clip, ejector bolt, ejector washer, extractor detent, extractor spring, firing pin, firing pin roll pin, firing pin spring, trigger spring, disconnect spring, hammer spring, safety detent, safety selector detent spring)

    Bolts
    , "old" style $120
    5.56 bolt
    6.8 bolt
    7.62x39

    Barrels (complete with gas block) $380



    USED parts

    Folding Tube stock in Norel FDE $85 shipped

    Can get pics if interested. If it doesn't say "shipped" next to the price, shipping will be additional. Usually $6 for small parts.
    Last edited by navalbeaver; 12-08-2015 at 10:06 PM.
    Molo5.7 and Vepr like this.

  2. #2
    Marksman bigern's Avatar
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    Hi there. I've been a little incognito on here for awhile, a tad out of the loop you could say. I see the 300 blk kits are going out now and that is terrific. What exactly do the kits include? I have a 7.62x39 micro pistol i would like to add a 300 blk kit for and a 16" mini upper 5.56 rifle I may need a kit for as well. Is it best to run a particular length gas system for all length barrels for this kit, or is the gas length particular to barrel length for cycling purposes? Just trying to figure out what setups I will need. Thanks.
    Last edited by bigern; 03-28-2015 at 11:43 AM.

  3. #3
    XCR Guru navalbeaver's Avatar
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    Conversion is barrel, gas tube and op rod. Currently only the "300 standard" kits are available. That is a 300 specific length. There are "micro" kits pending. They're .3" shorter on the "300 standard"gas length and are the same length as the micro gas system. You want the "standard" if you've got a full length upper. The "micro" kit will work for the mini and micro uppers. I don't have s micro upper to check but if beer you could get away with a "standard" kit on the micro upper. You'd just have an extra .3" of tube between the block and the upper.

    Barrel lengths are 9.3" and 16". Rumors of something shorter but nothing confirmed.

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  5. #4
    XCR Guru MickeyC's Avatar
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    If you get any in I'd love a spare standard length gas tube.
    Semper in excremento sum, solum profunditas mutat. 'Always in the shit, only the depth varies'

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  6. #5
    Marksman bigern's Avatar
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    Does the 300blk require a change to my existing gas system then? I apologize for my lack of knowledge. I remember the last time I was around here the 300 was in real limbo and we weren't too sure how it would be implemented due to technical issues in development.
    Last edited by bigern; 03-28-2015 at 06:37 PM.

  7. #6
    XCR Guru Merlin's Avatar
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    Quote Originally Posted by bigern View Post
    Does the 300blk require a change to my existing gas system then? I apologize for my lack of knowledge. I remember the last time I was around here the 300 was in real limbo and we weren't too sure how it would be implemented due to technical issues in development.
    The 300 barrel will come with the correct gas block for the length. The new gas blocks that are going on the 300 kits only are verified at the moment for the 300 only, all other calibers are still in testing phase. The gas tube and operating rods will come appropriate for the length of the 300 barrel too.

    "Be Vigilant and Safe!!"
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  8. #7
    XCR Guru navalbeaver's Avatar
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    Quote Originally Posted by Merlin View Post
    The 300 barrel will come with the correct gas block for the length. The new gas blocks that are going on the 300 kits only are verified at the moment for the 300 only, all other calibers are still in testing phase. The gas tube and operating rods will come appropriate for the length of the 300 barrel too.
    What he said.

    The barrel is complete with new gas block, the rest of the parts get the gas/piston system setup correctly. If you don't have a 556 bolt, you'll need one of those as well.

  9. #8
    Marksman bigern's Avatar
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    So you can run the 9.3" on a standard sized upper then? Interesting. Are the micros shipping as of yet?

  10. #9
    XCR Guru navalbeaver's Avatar
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    Still waiting on the micros....

  11. #10
    XCR Guru navalbeaver's Avatar
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    Updated

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