Quantcast
  1. Sign up now and join over 35,000 northwest gun owners. It's quick, easy, and 100% free!

Variations in the AR-10/LR-308 Platform

Discussion in 'General Firearm Discussion' started by IronMonster, Jan 17, 2015.

  1. IronMonster

    IronMonster Washington Opinionated Member Diamond Supporter

    Messages:
    4,178
    Likes Received:
    6,628
    I think I am ready to build a AR-10/LR-308 and know there are various bits that will and wont work together. I am sure with a little Google-fu and I can figure out compatibility but I am really looking more about what is the pros and cons of one VS the other. Is one more standard? More options? What parts will swap with AR15? Same parts in both large frame platform? Is it just the upper/lower that is the issue? (meaning can a swap a BCG between the two different reviver choices?)
     
  2. edslhead

    edslhead Vanc Gold Supporter Gold Supporter Silver Supporter Bronze Supporter

    Messages:
    2,168
    Likes Received:
    4,246
    Basically, the grip, trigger, buffer tube and butt stock are the same on both 10's and 15's. The BCG depends on weather you want the forward assist to work. Some uppers ( DPMS) have the forward assist button forward and push on the end of the bolt. PSA and several other uppers are at the rear of the upper and push the grooves on the side of the bolt. When I put my 10 together I used the PSA upper , lower and BCG just make sure there wasn't any miss matches. AS for which style is better the DPMS or the Armalite, don't have a clue.
     
    IronMonster likes this.
  3. spectra

    spectra The Couve Moderator Staff Member Bronze Supporter

    Messages:
    1,913
    Likes Received:
    720
    I built a Mega (DPMS Pattern) a few years ago. As mentioned above a normal LPK fit just fine along with the stock. DPMS pattern seemed to have more parts available when I built mine but not sure what is on the market now. It seems like there are way more makers of lowers now than a few years ago.

    Armalite is its own animal and a lot of people like them. I would rather go with a DPMS pattern as it seems way more parts are available.
     
    BlindedByScience and IronMonster like this.
  4. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

    Messages:
    3,034
    Likes Received:
    6,585
    There is the RRA 308 also. They seam to run great. Even though they use the FAL magazines.
    Witch don't really have feed lips built in. The Lips for the FAL are built into the receiver. So there magazines are really more of a spring loaded ammo box.

    I'm sure your not even considering this odd ball 308 AR. The reason I mention it is to point out the magazine design to those that don't know. To bad. I like RRA AR's. But like I said their 308 somehow works?

    I have posted these pictures before. Sorry. I'm obsessed with the FAL!

    And that brings up a good point! Why are you building a 308 AR? ;)
     
    Last edited: Jan 28, 2015
    mjbskwim, Martini_Up and Nwcid like this.
  5. Nwcid

    Nwcid Yakima and N of Spokane Well-Known Member

    Messages:
    3,593
    Likes Received:
    1,480
    One of the first questions you need to ask yourself is what kind of magazines do you want to use. That will answer a lot of your other questions.

    When I build mine soon it will be the Stoner/SR-25/P-mag style.
     
    Medic! likes this.
  6. BlindedByScience

    BlindedByScience Vancouver WA Well-Known Member

    Messages:
    414
    Likes Received:
    431
    Nwcid likes this.
  7. Nwcid

    Nwcid Yakima and N of Spokane Well-Known Member

    Messages:
    3,593
    Likes Received:
    1,480
    Yeah if you are looking at the POF's Cabbalas actually has a good deal on them, http://www.cabelas.com/product/POF-...ucts&Ntt=POF&WTz_l=Header;Search-All+Products

    I know in Yakima they have one in the traditional "silver" NP3 color for just under $2000. I keep looking at it hard, but it is a 14.5" pinned barrel and I want to run my can on it so I would have extra expensive of switching the brake out. I am going to build.
     
  8. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

    Messages:
    3,034
    Likes Received:
    6,585
    Yes. It's a good time to buy.

    I just picked up a Colt 6920 Magpul FDE for $899 last week. And when they go down further I will get another!

    I'm not sure. Have the AR build parts gone down in price like the complete rifles? In both 5.56 and .308?
     
    BlindedByScience likes this.
  9. IronMonster

    IronMonster Washington Opinionated Member Diamond Supporter

    Messages:
    4,178
    Likes Received:
    6,628
    Well..... I Have two other .308 rifles. A Springfield SAR-8 and Cetme FR-8. Seems like sticking with 7.62 x 51 makes sense and I already have a stable full of small bore AR's so I have lots of parts. A .308 AR just seems like it's a good idea. I also plan on adding a Ruger Gunsite scout to the stable at some point.

    I want to use P-mags so I guess that steers me towards one of the angled mag well lowers. I am strongly considering a Aero Precision upper and lower partly because they are 40% less money than the Mega or Rainer and seem like good bits.
     
  10. IronMonster

    IronMonster Washington Opinionated Member Diamond Supporter

    Messages:
    4,178
    Likes Received:
    6,628
    I went into Rainer Arms today and looked at what they have. Honestly I am hoping I can build something for far less than $2500, Maybe that is delusional
     
    Nwcid likes this.
  11. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

    Messages:
    3,034
    Likes Received:
    6,585
    I like the way you think!

    I have my HK-91 and a Belgian 50.0 FAL. I can barely keep them fed. .308 is not that cheep any more.
    It's gona hurt when I start replacing all the $375 per 1000 South African I bought. :(
    But I will probably get a DPMS, SASS AR-308 at some point. I just like the way they look.


    Edit- Actually I think it was $375 per 1200:(
     
    Last edited: Jan 19, 2015
    Nwcid likes this.
  12. BlindedByScience

    BlindedByScience Vancouver WA Well-Known Member

    Messages:
    414
    Likes Received:
    431
    That's a fantastic price on a solid AR. IMHO the Colt is the one to beat in that price range. Well done...:cool:
     
    Medic! likes this.
  13. BlindedByScience

    BlindedByScience Vancouver WA Well-Known Member

    Messages:
    414
    Likes Received:
    431
    I'm still at the investigatory stage. My problem is that when I look at parts, I look at < really > nice parts, and blow past the fully assembled rifles cost pretty quickly. I haven't made up my mind yet, but that Rainier Arms is a sweet platform with nice parts, hell, it's even got a CMC trigger. The POF is a piston gun with an adjustable regulator, very suppressor friendly. My son the armorer tells me to get at least 16" if I'm going to do an AR10 platform. Hell, for about $3400 you can have a LaRue OBR and that's a pretty competent rifle, in anyone's book.
     
  14. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

    Messages:
    3,034
    Likes Received:
    6,585
    Ya. I kept hearing the guys at the gun stores telling people ''The RRA is just as good as the Colt'' Or ''The Bushmaster is just as good as the Colt''. And '' The S&W is just as good as the Colt''.

    Then it hit me. Nobody is saying ''The Colt is just as good as brand-X''. Why? Because the Colt is the one all the others are compared to!

    But that's why I bought, what I bought. You get what makes sense to you.
     
    IronMonster and BlindedByScience like this.
  15. BlindedByScience

    BlindedByScience Vancouver WA Well-Known Member

    Messages:
    414
    Likes Received:
    431
    mjbskwim and IronMonster like this.
  16. IronMonster

    IronMonster Washington Opinionated Member Diamond Supporter

    Messages:
    4,178
    Likes Received:
    6,628
    The Ruger is one I would consider. That is more in the price range I want to be in. (and It takes P mags :)
     
  17. Medic!

    Medic! What just happened? Has eagle eyes. But cant remember what he saw. Bronze Supporter

    Messages:
    3,034
    Likes Received:
    6,585
    What about a Colt le901 [I think that's the number]? It is a bit gimmicky. But it will accept regular .556 AR uppers.
    I see them for $2099 at Atlantic Firearms. So I'm sure you can get one for less.

    Now just because it is a Colt Dose not mean much with the .308 rifles. Not unless they are making them to the same standards as the .556 rifle.

    Do they have a military contract with the same strict standards as the .556 for their .308 AR's? I don't know?
    But I have seen some cheep Colts before. Like the SAA Cowboy for example.

    Just another option.
     
  18. jluck

    jluck Really,Really, Close to Newport Oregon 97365 Voted #1 Member

    Messages:
    1,890
    Likes Received:
    1,209
  19. drewp

    drewp 503pdx Bronze Supporter Bronze Supporter

    Messages:
    974
    Likes Received:
    535
    Buying a complete gun is lame when you can assemble it yourself!...

    I seen lots of deals on 308 stuff...ares armour had some smoking deals on NiB bcgs and of course psa has there very affordable stuff...shop around and build a Franken 308!..
     
  20. edslhead

    edslhead Vanc Gold Supporter Gold Supporter Silver Supporter Bronze Supporter

    Messages:
    2,168
    Likes Received:
    4,246
    Franken 308 I put together last year for $1800 as it sits. That's with a Timney skeleton trigger, Rainier 18' match barrel, 15" Dimonhead guard and the Redfield scope. Using cheaper parts you make one for far less.
    Also has the JP captured buffer

    IMG_0093_zps0b7ce1b5.jpg
     
    mjbskwim, IronMonster and Nwcid like this.