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Thread: Bolt carrier weights

  1. #1
    Dano5326 Guest
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  2. #2
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    Cool. Thanks Dano. Was pondering this the other day for some reason wondering if the E-carrier would be slightly lighter b/c of the segmented rail that interfaces with the upper and the longer cam pin tunnel. It is but not much.

    -Jax
    Last edited by jaxman7; 02-26-14 at 08:54.


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  3. #3
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    Seems like running a Semi carrier give you a negligible weight difference. Less than 4% difference.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

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    Quote Originally Posted by Dano5326 View Post
    I do have, what I think is, a Colt semi carrier with no bottom. "half circle".?? But am unsure as to maker and didn't weight it.
    Mine has a "C" stamped on the left side, if that helps you authenticate it. ??

  5. #5
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    Cool thread, here are some of my contributions to add:
    Young Manufacturing NM semi-auto - 265g
    JP stainless semi-auto - 250g

  6. #6
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    Here are my contributions (all with gas key attached, and nothing else):

    Rock River Arms (RRA) chrome semi-auto bolt carrier: 9.21 oz / 261 g
    Primary Weapons Systems (PWS) Isonite DI bolt carrier: 10.79 oz / 306 g
    LMT standard semi-auto carrier: 9.10 oz / 258 g

    Joe Mamma
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    Just a general question about BCG's. I have seen some designated as M16 bolt. I am planning on building a mid length/16" barrel ar. Will a M4 bolt fit this or does it have to be M16? Thanks for any help.

  8. #8
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    My contribution to the thread, carrier/key only

    Core 15 M16 profile Carrier 9.38oz / 266g
    PSA Premium M16 Carrier 9.34 oz / 265g

  9. #9
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    There is no such thing as an M16 bolt. What they are MOST LIKELY referring to is the carrier profile. That means a full auto carrier which hasn't been chopped and emasculated.

    Quote Originally Posted by lre433 View Post
    Just a general question about BCG's. I have seen some designated as M16 bolt. I am planning on building a mid length/16" barrel ar. Will a M4 bolt fit this or does it have to be M16? Thanks for any help.



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  10. #10
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    Weight on a calibrated digital scale.

    BCG's, complete assembled

    DD BCG, standard 11.68 oz.

    DD BCG, w BCM extractor upgrade kit 11.54 oz.

    BCM carrier with FN bolt, BCM small parts 11.70 oz.

    'generic' NiB BCG - std. carrier, 9310 steel bolt, mil-spec parts 11.61 oz.

    Carriers stripped (w gas-key) coming up:
    Last edited by polydeuces; 04-21-14 at 21:08.
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