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Thread: First 308 build

  1. #1
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    308 build

    Allright fellas... never had one, always wanted one...well a deal I couldnít pass up popped up , so after a drive to Rainier Arms , hereís the start to the first large frame AR Iíve had or built. Wanting something to punch paper, shoot steel and use to hunt as the itch to is there.

    So the base of the build will be on this Aero Precision M5 lower and upper. Lower is complete from Aero with their LPK, AR-15 carbine length tube and shorty buffer and their spring.. I have been eyeballing the Armaspec SRS setup for my battkekitty , but I might test it out in this..TBD..

    So Iíve already tore it down..as I canít leave anything alone.......and Iím gonna borrow the g2s , bad safety and stock off my other carbine thatís deactivated as I was in a corner so I sold the PRO off it, stole something else..anyways..

    Back to the 308 here..starting out as

    Aero M5 lower -complete as built from aero.
    Aero M5 upper
    Fortis CH
    Toolcraft/brownells nitride BCG

    Iíve got a Magpul grip for it laying around, and I think a barrel has been sourced.Think Iím just gonna run a A2 for now. As a suppressor setup is hard on the mind and would need their mount..so...TBD..

    Then just gas tube and block, which still unsure to go adj. from the get go or just a std for now then swap later..etc..

    Oh and handguard, looking for a 15Ē Ďish mlok something.. I want a cmt , but funds might have to settle on a aero something for now.. about a bill cheaper too..which is Ammo money in my mind..

    Quick old iPhone pic to get this started..
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    Last edited by mustangfreek; 8 April 2019 at 00:50.

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    You’re welcome

  3. #3
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    Quote Originally Posted by UWone77 View Post
    Youíre welcome
    Haha...I canít say thank you enough for all the help..and being a friend...itís hard to come by now a days...#nohomo...

    Iím excited to getting this done.

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    Quote Originally Posted by mustangfreek View Post
    Haha...I can’t say thank you enough for all the help..and being a friend...it’s hard to come by now a days...#nohomo...

    I’m excited to getting this done.
    What parts are you short again?

    Handguard? That pretty much it?

    Sights?

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    After I play swap around with the now , parts gun. I should only need gas block,tube, handguard to get it up and running..

    Well that and Iím gonna need to borrow or buy a reaction rod tool or such along with the go/no go guages.. not really setup for putting together big boy ARs yet.

    Sights...not sure... might have to rob the 1-4 off the battlekitty for now.

  6. #6
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    Can't help with the gauges, but I have a 308 reaction rod you can borrow. When you are ready for it, if you still need it, PM me with a shipping address.
    NRA Benefactor Member
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    "I won't be wronged, I won't be insulted, and I won't be laid a hand on."
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  7. #7
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    Get the Seekins (fixed it) adj gas block. It's cheap, relative to others and it works. Save the money you'd spend on that gamble because 9 out of ten, you'll need it.
    Last edited by Joelski; 24 March 2019 at 20:04.
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    Quote Originally Posted by Jerry R View Post
    Can't help with the gauges, but I have a 308 reaction rod you can borrow. When you are ready for it, if you still need it, PM me with a shipping address.
    Sweet!! Thanks jerry. Will do

    Quote Originally Posted by Joelski View Post
    Get the Fortis adj gas block. It's cheap, relative to others and it works. Save the money you'd spend on that gamble because 9 out of ten, you'll need it.
    I’ll look into that, didn’t realize fortis made a adj. block.

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    Unless you are really planning out a lightweight build, I can't recommend the 2A Xanthos primarily becuase I absolutely hate their mounting system. You put 2 screws on each side that are angled back and 45 degrees to lock into the barrel nut. As you torque the screws the rail itself "yaws" about the horizontal barrel axes. It looks cool and is very light, but is a niche product IMO.


  10. #10
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    Ya I seen that mount setup, little different but seems it would be ok.idk

  11. #11
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    I'd watch the rail board on m4c for as long as it takes until a Geissele rail pops up, but that's just me.

    My next build will be the Radian AR 762.
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  12. #12
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    Canít wait to see a radian 308!

    I have the Xanthos rail too. The mount is weird but I must admit itís solid. Iíve carried it all over the woods in hunting seasons without issue. Every once in a while they offer blems for $99.

    If you want a new Xanthos 2a upper with blem rail, Iíll sell it to you at my cost. I have an extra set.

  13. #13
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    Didnt think there was a size difference as it fits over the barrel nut. Rail height is another matter, so there ya go. Good luck.
    There's no "Team" in F**K YOU!

  14. #14
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    The barrel nut is proprietary to the rails on .308ís and vary based on the platform. AR-10 (Armalite & Noveske) barrel nuts are 1 7/16-18 thread and DPMS (SR-25) are 1 7/16-16 thread. Definitely not interchangeable with AR-15ís that are 1 1/4-18.

  15. #15
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    Quick pic from last nite, crappy quality..but I just got a new phone finally..been rocking a cracked I5 for ...um..years

    Anyways...brownells/toolcraft/ looks identical to the Aero bcgís....will see I guess thru them being on sale and codes along with AJ this was right at a $100 shipped, staked well and everything looks good..
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