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Thread: The perfect .308 AR

  1. #1
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    The perfect .308 AR

    I put together the perfect .308 AR. I've posted a photo of if before, but I haven't explained the build yet.

    Now keep in mind, when I say that it's the "perfect.308 AR", I mean it's the perfect one... for me. I was looking to get into a .308 because I wanted the better terminal ballistics of the heavier round. What I didn't really need, was the increased range. This was to be a defensive combat carbine. As it was to be "defensive" in nature, it's not one I would need to reach out long distances, at least not in my area, and not that I would be able to justify any long distance shooting in any court... I just wanted something with a bit more oomph than the 5.56, or should things go really bad, the ability to punch through cover better.

    I did still want to keep it in as small, and light a package as I could. I like a patrol carbine, not a full on sniper rifle.

    On the other hand, I've seen guys go way too far with the "smaller is better" theory too building 10" .308 pistols that though probably fun to play with, would pretty much cut the .308 off at the knees. I tried to make a decent compromise, and I'm pretty happy with the result.

    Receivers... Aero Precision with their LPK
    Barrel... BA Hanson 14" with pin-and-welded Warcomp
    Rail system... Midwest Industries
    Scope... Primary Arms 1-8 with the ACSS reticle
    BUIS... Troy with tritium
    BCG... Lantac enhanced
    Recoil system... JP Captured
    Trigger... Geissele SSA-E
    Furniture... Magpul CTR stock, MOE grip, MVG M-LOK
    Weaponlight... Surefire M300 Scout Light
    Leftover ambidextrous safety that I can't remember where I got...
    Leftover scope mount... same deal... just happened to work out well.

    Anyway, the end result is the rifle is a bit heavier that the typical AR (as expected being a .308) but still very easily carried as a patrol carbine. I lose some velocity, and power going down to 14", but not as much as going crazy, and doing the full on SBR 10" thing. It still packs a lot more punch than a 5.56. It's very controllable. Not sure if that's because I'm a big dude (6'1" 280) with 28 years of Army experience, or the very effective Warcomp (probably both) but I like it. I really like the ACSS reticle.



  2. #2
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    Nice build! What are your accuracy expectations from it? I have a SOCOM 16 in a Troy MCS, but have often thought about a AR based build....

  3. #3
    Shooter

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    I've only had it out a couple times, and was getting right at 1.5", but had some groups under (none under 1") with 168gr Fed GMM. BA says their Hanson barrels are 1" barrels, so I either got a dud, or need to shoot better... Either way, that's still very respectable in my book. We all have this "every gun has to shoot 1" mentality these days... Plus I'm getting older, and I shoot less often than I used to. Hoping to get better, but I'm happy with it as it sits.


    EDIT... 1.5" is from a bench, but still plenty accurate for a combat carbine.

  4. #4
    Master bjenkins's Avatar

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    Quote Originally Posted by daddyusmaximus View Post
    I put together the perfect .308 AR. I've posted a photo of if before, but I haven't explained the build yet.

    Now keep in mind, when I say that it's the "perfect.308 AR", I mean it's the perfect one... for me. I was looking to get into a .308 because I wanted the better terminal ballistics of the heavier round. What I didn't really need, was the increased range. This was to be a defensive combat carbine. As it was to be "defensive" in nature, it's not one I would need to reach out long distances, at least not in my area, and not that I would be able to justify any long distance shooting in any court... I just wanted something with a bit more oomph than the 5.56, or should things go really bad, the ability to punch through cover better.

    I did still want to keep it in as small, and light a package as I could. I like a patrol carbine, not a full on sniper rifle.

    On the other hand, I've seen guys go way too far with the "smaller is better" theory too building 10" .308 pistols that though probably fun to play with, would pretty much cut the .308 off at the knees. I tried to make a decent compromise, and I'm pretty happy with the result.

    Receivers... Aero Precision with their LPK
    Barrel... BA Hanson 14" with pin-and-welded Warcomp
    Rail system... Midwest Industries
    Scope... Primary Arms 1-8 with the ACSS reticle
    BUIS... Troy with tritium
    BCG... Lantac enhanced
    Recoil system... JP Captured
    Trigger... Geissele SSA-E
    Furniture... Magpul CTR stock, MOE grip, MVG M-LOK
    Weaponlight... Surefire M300 Scout Light
    Leftover ambidextrous safety that I can't remember where I got...
    Leftover scope mount... same deal... just happened to work out well.

    Anyway, the end result is the rifle is a bit heavier that the typical AR (as expected being a .308) but still very easily carried as a patrol carbine. I lose some velocity, and power going down to 14", but not as much as going crazy, and doing the full on SBR 10" thing. It still packs a lot more punch than a 5.56. It's very controllable. Not sure if that's because I'm a big dude (6'1" 280) with 28 years of Army experience, or the very effective Warcomp (probably both) but I like it. I really like the ACSS reticle.


    That looks very sweet!

  5. #5
    Expert roscott's Avatar

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    Very cool. Iíve considered a similar build, but really looks like you nailed it. Whatís the finished weight?

    Did the BA barrel come as a 14Ē or did you have it cut down?
    Quote Originally Posted by theweakerbrother View Post
    Freedom is dangerous and I prefer it that way.

  6. #6
    Expert cmamath13's Avatar

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    Question

    Daddyusmaximus,

    I really like what you have put together! It must feel pretty cool to have your rifle exactly like you wanted it to be!

    I am considering building something similar to yours.
    1. Do you have a recommendation on a beginners tutorial how?
    2. Roughly, how much did you invest?
    3. Where did you pick the parts?
    4. Did you have any trouble finding in-stock items?
    5. Did you have any compatibility issues with parts?
    6. How's reliability?

    Thanks!
    The Schofield Kid: Well, I guess they had it... comin'.
    Will Munny: We all got it comin', Kid.

  7. #7
    Shooter

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    Quote Originally Posted by roscott View Post
    Very cool. Iíve considered a similar build, but really looks like you nailed it. Whatís the finished weight?

    Did the BA barrel come as a 14Ē or did you have it cut down?
    Came that way. It was a discontinued barrel, and was on sale, plus black Friday, plus my military discount...

    No idea on weight. It's not like I can walk in to the post office, and ask then to weigh it...

  8. #8
    Shooter

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    Quote Originally Posted by cmamath13 View Post
    Daddyusmaximus,

    I really like what you have put together! It must feel pretty cool to have your rifle exactly like you wanted it to be!

    I am considering building something similar to yours.
    1. Do you have a recommendation on a beginners tutorial how?
    2. Roughly, how much did you invest?
    3. Where did you pick the parts?
    4. Did you have any trouble finding in-stock items?
    5. Did you have any compatibility issues with parts?
    6. How's reliability?

    Thanks!
    1. I'm on other forums too. One of them is M4Carbine.net, and they are very knowledgeable on the two different .308 platforms... Having two different .308 styles can get confusing as everything isn't as standardized as with the 5.56 AR world, because there isn't a government standard.
    2. No clue. I bought the parts over the course of about a year. Look up the parts, wait for sales..
    3. Online... I looked around for the least expensive place that had a good rep.
    4. Not that I remember, but there may have been a couple times where I bought a different part if one was out of stock. Now it may be different because people are panic buying everything.
    5. NO. If you get all the parts for the same platform (I went with the DPMS style) and they're good quality parts that are well matched (same as with any AR) everything should work. Or you could start with a factory rifle, then just change a few things if that's all you need.
    6. Good so far, but it's only been out a few times. Mostly because my stash of .308 isn't that big, and I'm not able to afford to build it up right now with so many other projects going on. I keep getting sidetracked into spending money on other crap... My 7mm Mauser, my .303 British, my CJ7... Hell, I just picked up an old stereo console today for a bluetooth build.

  9. #9
    Shooter

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    Quote Originally Posted by daddyusmaximus View Post
    I put together the perfect .308 AR. I've posted a photo of if before, but I haven't explained the build yet.

    Now keep in mind, when I say that it's the "perfect.308 AR", I mean it's the perfect one... for me. I was looking to get into a .308 because I wanted the better terminal ballistics of the heavier round. What I didn't really need, was the increased range. This was to be a defensive combat carbine. As it was to be "defensive" in nature, it's not one I would need to reach out long distances, at least not in my area, and not that I would be able to justify any long distance shooting in any court... I just wanted something with a bit more oomph than the 5.56, or should things go really bad, the ability to punch through cover better.

    I did still want to keep it in as small, and light a package as I could. I like a patrol carbine, not a full on sniper rifle.

    On the other hand, I've seen guys go way too far with the "smaller is better" theory too building 10" .308 pistols that though probably fun to play with, would pretty much cut the .308 off at the knees. I tried to make a decent compromise, and I'm pretty happy with the result.

    Receivers... Aero Precision with their LPK
    Barrel... BA Hanson 14" with pin-and-welded Warcomp
    Rail system... Midwest Industries
    Scope... Primary Arms 1-8 with the ACSS reticle
    BUIS... Troy with tritium
    BCG... Lantac enhanced
    Recoil system... JP Captured
    Trigger... Geissele SSA-E
    Furniture... Magpul CTR stock, MOE grip, MVG M-LOK
    Weaponlight... Surefire M300 Scout Light
    Leftover ambidextrous safety that I can't remember where I got...
    Leftover scope mount... same deal... just happened to work out well.

    Anyway, the end result is the rifle is a bit heavier that the typical AR (as expected being a .308) but still very easily carried as a patrol carbine. I lose some velocity, and power going down to 14", but not as much as going crazy, and doing the full on SBR 10" thing. It still packs a lot more punch than a 5.56. It's very controllable. Not sure if that's because I'm a big dude (6'1" 280) with 28 years of Army experience, or the very effective Warcomp (probably both) but I like it. I really like the ACSS reticle.


    I like the fact you said the perfect one for you. This statement will cause a lot less argument lol

  10. #10
    Shooter

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    Quote Originally Posted by crazygunner1 View Post
    I like the fact you said the perfect one for you. This statement will cause a lot less argument lol
    Did I mention that I'm also the perfect man? lol.

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