Thinking about building my own AR in .308. I know the lower, barrel and bolt need to be specific for the caliber and with this caliber a stronger buffer spring should be used but what about the upper?
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.308 AR
- Thread starter Bizkitjmd1
- Start date
The upper also has to specific to the caliber. Actually, just sort of: the same .308-size upper can be used for .243, .260, etc..
There are just 2 sizes in uppers and lowers that I know of: the common .223 size and the larger .308 size. Obviously, they must be matched to each other.
There are some oddball uppers in 30-06 and 50BMG, but they are not common.
There are just 2 sizes in uppers and lowers that I know of: the common .223 size and the larger .308 size. Obviously, they must be matched to each other.
There are some oddball uppers in 30-06 and 50BMG, but they are not common.
What are some companies to look at to piece one together?
ChevyGuy91
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That, if I had the dough and really felt the need for an other .308 rifle, it would be one of those 2.
.308 AR's
What do you plan on doing with the rifle should be the first question? If your just planning on shooting woodchucks out to a couple/few hundred yds, You can pretty much buy a brand new complete LAR-8 from RRA(Rock River Arms) thats capable of sub MOA groups for $1500. If your planning on using for match/competition anyone will tell you there is no limit on what your cost will be. If your in New England,there aren't many 1000yd ranges or places where you can go and just shoot(friends sandpit,etc)that have that kind of range. Like PatMcD said(if memory serves me correctly his profile pic looks an awful lot like Perry..)there are alot of manufacturers out there that have very specific manufacturing specs that don't allow non manufactuer components.. I'm currently shooting and setting up a RRA LAR-8 for the optics class @ Perry this yr. Off a "soft" rest,I'm holding sub MOA groups @ 300 yds... with Hornady factory ammo shooting 150gr SST ammo.
What do you plan on doing with the rifle should be the first question? If your just planning on shooting woodchucks out to a couple/few hundred yds, You can pretty much buy a brand new complete LAR-8 from RRA(Rock River Arms) thats capable of sub MOA groups for $1500. If your planning on using for match/competition anyone will tell you there is no limit on what your cost will be. If your in New England,there aren't many 1000yd ranges or places where you can go and just shoot(friends sandpit,etc)that have that kind of range. Like PatMcD said(if memory serves me correctly his profile pic looks an awful lot like Perry..)there are alot of manufacturers out there that have very specific manufacturing specs that don't allow non manufactuer components.. I'm currently shooting and setting up a RRA LAR-8 for the optics class @ Perry this yr. Off a "soft" rest,I'm holding sub MOA groups @ 300 yds... with Hornady factory ammo shooting 150gr SST ammo.
The joy of CT at the moment I don't need to worry about mag capacity
This. There was just a group buy for 308 lowers that accept the inexpensive G3 mags. Wish I got in on that.
I also had oneWish I never sold it.
I've been threatening to put one together from the stripped lower I got a deal on and never have. I'm heard horror stories on reliability after around 200-300 rounds.. did you experience any issues?
Mass-diver
NES Member
They are supposed to be really nice (20 rounders), wish I could have them in MA
In terms of the thread, those LMT MRPs look awesome!
Looked into them a couple of weeks ago and way to far out of my price range
They make them after the M110/SR25/DPMS pattern. They won't work in the RRA, Armalite, or Noveske (Is that right? I think theirs is AR-10 pattern) guns.
http://store.magpul.com/product/MAG243/11
Would a handguard off a 223 ar work on the 308 ar or does it need a different "bigger" handguard?
They are supposed to be really nice (20 rounders), wish I could have them in MA
In terms of the thread, those LMT MRPs look awesome!
There are blocked versions available. I have several.
1903Collector
NES Member
Looky here..
http://fulton-armory.com/FAR-308.aspx.
I had an Armalite AR10A2 a few years back, wasn't that impressed with it. I just stick with the M1A now.
http://fulton-armory.com/FAR-308.aspx.
I had an Armalite AR10A2 a few years back, wasn't that impressed with it. I just stick with the M1A now.
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That's where I'm at now.. do I want to mess with the expense/weight (but excellent dependability) of a M1 EBR or build out an AR .308.
I love my M1A loaded, but the EBR chassis for the M1A are just stupidly heavy. A 14 lb EBR is nothing more than a range toy unless you are a gym rat.
While I prefer my M1A to my AR-10, if you really want an EBR style .308, skip the M1A.
