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New LR-308 Lightweight build...


cwikjr

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I really like my last build except that it's pretty heavy...

So going to see if I can make this one a bit lighter...

Parts as follows...

 

DPMS Flat top upper.

20 inch DPMS Light weight hunter barrel...

Quintin Defense 80% lower...

A2 Stock with .308 buffer and spring...

DPMS LPK...

 

Still need a carrier group and hand guards or ff rail...

Going to go with a classic style look with a fixed FSB and Carry Handle...

Either a regular A2 or a set of A1 triangle hand guards...

 

Looking at the PRI carbon fiber Delta FF Tube...

I like it a lot but it's kind of pricy...

 

I have one of the DPMS A3 flat top uppers with the dust cover and forward assist for use with the carry handle...

Should I use a F marked FSB or a standard A2 FSB???

 

I'll post pics when I get some of it put together...

 

 

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Should I use a F marked FSB or a standard A2 FSB???

 

 

 

F-marked FSB is for a carbine gas system, to give it the same adjustability as a rifle-length gas system.  F-marked FSB wouldn't do any good in this instance, with a 20" barreled-weapon.

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I'm going with the 20 inch barrel for balance...

My 20 inch .556 AR's seem to balance better than carbines...

Going with standard hand guards and a taper pinned FSB...

Wish some one made a fixed carry handle upper with A2 sights for the LR-308 never have liked flat tops...

I received the barrel Monday it's pretty nice looks like it has a chrome lined bore and chamber...

I'll try to get som pics of the parts pile before I start putting it togeather been super busy with 3 jobs,,,

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  • 2 weeks later...

All the parts are in now to get the barrel threaded and put it togeather...

 

It's a lot lighter than my first build when i mocked it up with my other lower...

 

And I have to wait for my lower to be engraved can't wait to get it back...

 

Here are pictures of the parts pile and the mock up...005_zps7290f1de.jpg001_zps7681661d.jpg002_zps0e576be8.jpg

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  • 3 weeks later...
  • 2 weeks later...

I gave it the tundra test last weekend... Temps here were -40 so i put the rifle in my trunk for a couple days to chill it out... Went out to our range and ran 100 rounds thorough it when it was a warmer -20... Functioned flawless my carrier group was dripping wet with Mobile 1 and seemed to like the extreme cold... Very happy with this build!!! Now I'm going to have to do a shorty!!!

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  • 3 weeks later...

 

Another option that is less expensive is the DPMS model - JSE has a good price:

 

http://www.jsesurplus.com/dpmsdetachablecarryhandlewitha2rearsightlr-308.aspx

 

 

Nice looking build! <thumbsup>

Edited by guruofhotrod
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That's nice looking brother!  I like the retro theme.  Makes me want to be a copycat. :)

 

Final weight?

Haven't weighed it...

It seems to weigh about as much as my AR-15A2...

Could have cut the barrel to 16 or 18  shave some weight...

But I like it just the way it turned out...

Wish I had better machine tools I'd whip out a A2 fixed carry handle upper for the LR-308 style lowers...

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It would be pretty sweet to replicate one of these!!

https://m.youtube.com/watch?feature=youtu.be&v=UCmHxieQduE

What I want to know is how. Armalite was getting that thing to under 6 lbs in the first place!!

Thats a lofty goal even for an AR15!

I think Chuck over at Gunlab is doing a Sudan Version of the AR10 and a AR-16...

If I remember right the early Hollywood ArmaLites had a thin steel barrel wrapped in fiberglass... Those failed in the 56 rifle trials...

I don't think the Dutch AR-10's weighed in at 6lbs...

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  • 5 months later...

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