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Thread: M4 Carbine Recoil too strong

  1. #51
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    Quote Originally Posted by Iraqgunz View Post
    XCRFan,

    Markings mean nothing unless they come from a known and trusted manufacturer. Other companies have marked theirs 5.56 as well only to be proven they are not.

    I think that the saying "You can lead a horse to water, but....." applies here.
    Sorry, perhaps I should have been more specific about the barrel. The barrels that DTI uses are manufactured by Wilson Combat. As far as I know, WC is a decent manufacturer. At least to the point that the if it is stamped 5.56, then it more than likely is 5.56.

  2. #52
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    Quote Originally Posted by XCRFan View Post
    If you can't already tell by my name, I am an XCR owner. That being said, I am prior military and have plenty of experience using the M4. I recently decided to build an M4 Carbine from the ground up. The gun performs flawlessly. Never had any kind of malfunction at all (yet!). I will eventually modify it into a MK18 like I had in the service.

    Everything is of decent quality. I have the following:
    BM upper and lower receiver
    DTI 16" M4 1/9 barrel (will be buying a 1/7 10.3 soon)
    DD Omega 7" Rail.
    CTR stock w/mil spec tube.
    H3 Buffer
    BM semi-auto BCG
    Std. A2 FH/Comp.

    However, the buffer spring I am using is a carbine buffer spring that I got out of a free CAA collapsible stock kit.

    I have put close to 500 rounds through it over the last few weeks and the recoil is just horrible. I cannot double tap and hit a man sized target at 50 yards. I can barely double tap and hit the same target at 25 yards.

    Now I am an expert shot with the M4 and the MK18. I never ever had a problem qualifying expert thought my entire military career so don't think the issue is with me.

    Something is wrong and I cannot figure it out. Please help me out. I have been racking my brain to figure out what I need to do to SIGNIFICANTLY reduce felt recoil.

    Any ideas?

    The barrel you bought is most likely WAAAAAAY over gased. This is the main problem. Mil-Spec gas port is .063 on a carbine.

    So how do you fix it? You can fill the GP and re-drill or sell the barrel.

    If neither of those interest you, get a Tactical Spring Co CS buffer spring and an H3 buffer.


    C4
    Last edited by C4IGrant; 11-12-09 at 10:34.

  3. #53
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    Quote Originally Posted by XCRFan View Post
    Sorry, perhaps I should have been more specific about the barrel. The barrels that DTI uses are manufactured by Wilson Combat. As far as I know, WC is a decent manufacturer. At least to the point that the if it is stamped 5.56, then it more than likely is 5.56.
    No they are no. WC does NOT make any barrels. Your barrel was made by WILSON.

    Wilson is a barrel manufacturer (and is all they do).



    C4

  4. #54
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    Quote Originally Posted by XCRFan View Post
    Sorry, perhaps I should have been more specific about the barrel. The barrels that DTI uses are manufactured by Wilson Combat. As far as I know, WC is a decent manufacturer. At least to the point that the if it is stamped 5.56, then it more than likely is 5.56.
    Talk about a whole 'lotta flawed assumptions.

    "Wilson" barrels are not "Wilson Combat".

    www.wilsonarms.com/

  5. #55
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    Quote Originally Posted by XCRFan View Post
    After during some more research on the forum, I found out what the gas port should be. You're really going to be confused. I mic'd it three times. The gas port on my bbl is .061."
    So you actually removed the front sight base or gas block and measured the hole in the barrel?

  6. #56
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    Quote Originally Posted by XCRFan View Post
    Sorry, perhaps I should have been more specific about the barrel. The barrels that DTI uses are manufactured by Wilson Combat. As far as I know, WC is a decent manufacturer. At least to the point that the if it is stamped 5.56, then it more than likely is 5.56.
    No, they aren't. That's an old cheeseball Model 1 Sales/Sherluk/Nesard marketing trick. "Wilson Barrels" are not made by Wilson Combat.

  7. #57
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    Quote Originally Posted by Hound_va View Post
    So you actually removed the front sight base or gas block and measured the hole in the barrel?
    Yes. I measured it with a digital micrometer. I measured it three times and it was .061 inches all three times. So it appears to me to be under spec'd. I zeroed out the mic before measuring. I am thinking about a buying a break. But I will shoot it with the phantom FH first.

    I am in Virginia and a member of Lafayette Gun Club in Yorktown, VA, if anyone in the area wants to compare rifles. PM me or something. I will provide the ammo.
    Last edited by Evil Bert; 11-12-09 at 20:33.

  8. #58
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    Quote Originally Posted by XCRFan View Post
    Yes. I measured it with a digital micrometer. I measured it three times and it was .061 inches all three times. So it appears to me to be under spec'd. I zeroed out the mic before measuring. I am thinking about a buying a break. But I will shoot it with the phantom FH first.

    I am in Virginia and a member of Lafayette Gun Club in Yorktown, VA, if anyone in the area wants to compare rifles. PM me or something. I will provide the ammo.
    Incorrect on the GP size as you cannot get an accurate reading that way.

    The poor man's way to do it is use drill bits to measure the hole.

    At best, you GP is .063 (mil-spec for a carbine).


    Since you are saying that the gun has a lot of recoil, you most likely have a GP size of .068 or bigger.

    Half the mods/Staff live in VA Beach area (FYI). I was a member of LGC for many years.

    C4

  9. #59
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    It's best to measure port size with a set of gage pins, but as Grant said, you can get by with drill bit shafts if you have an index that has lots of different sizes.

  10. #60
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    Quote Originally Posted by spamsammich View Post
    It's best to measure port size with a set of gage pins, but as Grant said, you can get by with drill bit shafts if you have an index that has lots of different sizes.
    Yep, gage pins are best.



    C4

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