Best precision ar upper reciver

[6brman]

I'm looking for a precision ar upper reciver. One that has a tight fit for the carrier and is straight. Been looking at the lantac side charging and a few others. Anyone have ideas or suggestions?? Thanks Aaron

 

[Bigjake83]

I always send my Upper Receivers in and have the face trued, and tolerance's​ checked. Out of all the Receivers I've had, these required no truing and have had exceptional fit and finish.

JP
VLTOR
FALKOR

Padom will tell you BCM

You also need to decide on what type of barrel you are going to use, if you run a Heavy Varmint style Barrel you will want something that's Stout, and has a lot of material towards the front of the Upper to mitigate receiver Flex.

 

[Jibnast]

This is a very subjective question, by this everyone is a fan boy of something and usually recommends what they run. The big question is do want billet or forged does it need to keep it's resale value. I have a few of the Rainer matched billet sets and love them and cannot tell a difference over my Mega.

 

[6brman]

Ok. I will be running a heavy varmit barrel on the end of it. It will be billet whatever I get.

 

[Centuriator]

I built an AR precision rifle and had a lot of success with a BCM upper and a White Oak Armory 20" precision/match grade barrel and a Geissele trigger using .223 Federal Gold Match ammo with SMK 75 77gr bullets.

It provided consistently sub-moa groups out to as far as I could go on the range I was shooting (750 yards). In fact it shot 5 inch groups in a 1/2 inch group at 100 yards.

It was an awesome rifle, but I did not send it off for any additional work to the fit or bolt fact, etc.

 

[Rob01]

Seekins Precision makes excellent products.

http://www.seekinsprecision.com/parts-and-accessories/ar-uppers.html

 

[Bigjake83]

Ok. I will be running a heavy varmit barrel on the end of it. It will be billet whatever I get.

What barrel length.??

The last time I did a Heavy Varmint build I had a 24" Krieger Bull Barrel I used this upper and it was fantastic...

http://www.jprifles.com/buy.php?item=CTR02UR

 

[Sffred]

Long time lurker and a private here at the hide.
I'm a Noveske and a KAC whore, I am biased for the two. But if u were to ask me the most precise upper receiver (and not say Noveske or KAC) I'd have to say Mega Arms MKM monolithic, maybe some of those Vltor monolith's also.

Please correct me if I'm wrong but they are the only 2 manufacturers that provide a true free floating barrel, where the handguard mounts onto the upper receiver not the barrel nut. So the only thing that the barrel nut does, is to mount the barrel onto the receiver.

Most manufacturers (almost all) have handguards/quad rails/keymod rails/mlok rails that mount on to the barrel nut.

on the Mega Monolithic uppers you can drop it by the handguard and the barrel and barrel nut is still intact. Still would shoot straight. (Irons and what ever devices you may have on your handguard maybe off. But your barrel is still GTG

my $0.02

Fred

 

[JMcBurn]

Long time lurker and a private here at the hide.
I'm a Noveske and a KAC whore, I am biased for the two. But if u were to ask me the most precise upper receiver (and not say Noveske or KAC) I'd have to say Mega Arms MKM monolithic, maybe some of those Vltor monolith's also.

Please correct me if I'm wrong but they are the only 2 manufacturers that provide a true free floating barrel, where the handguard mounts onto the upper receiver not the barrel nut. So the only thing that the barrel nut does, is to mount the barrel onto the receiver.

Most manufacturers (almost all) have handguards/quad rails/keymod rails/mlok rails that mount on to the barrel nut.

on the Mega Monolithic uppers you can drop it by the handguard and the barrel and barrel nut is still intact. Still would shoot straight. (Irons and what ever devices you may have on your handguard maybe off. But your barrel is still GTG

my $0.02

Fred

AERO also makes an upper where the handguard mounts onto the receiver not the nut. My buddy and I both have them. His build with a WOA SPR build shoots very well (averages around .5 MOA if wind doesn't throw a round due to a gust/lul) The AERO lower is also very affordable at <$200 for upper and hand guard.

 

[6brman]

It's a 24in heavy varmit.

 

[yellowfin]

Any particular reason not to use LaRue?

 

[A5scott]

I would think JP and Cross Machine Tool would work well in that application. Lots of options.

Scott

 

[The King]

The most accurate gun Of any kind I have owned was built on a san tan tactical upper.

i think it's much more important that the barrel be hammer fit into the upper or shimmed+green loctite.

 

[6brman]

I'm leaning towards a cross machine or lantac. I don't need a forward assist. Or a shell deflector really. Jp is nice but they are getting pricy

 

[346ci]

Mega...

 

[longshot2000]

I think the morale to this thread is that there are many good uppers.

To me, they fall into three areas:

1) solid every day AR forged receivers. Here, I like Colt and BCM.
2) heavier billet SPR and specialty receivers. Here, Vltor, LaRue, KAC, LMT
3) integrated upper / forerail, like: Vltor VIS, LMT MWS, Colt (like 9420)
4) other, non-mil-spec speciality: Mega, JP, Seekins

 

[GhengisAhn175]

Since no ones mentioned it yet, hodge defense

 

[sheepdog697]

Hands down palmetto state armory.

 

[Ayoung1]

Vltor MUR with Larue barrel, I have a few and they shoot lights out with no trying needed. My billet Mega upper is just a step down from the Vltor.

 

[Ayoung1]

double tap

 

[alexander66]

I have good results with my BCM Mod 12 upper and White Oak Armory barreled upper.

 

[Tailwater]

I'm considering buying a precision upper so this thread is helpful. Does Les Baer Custom make anyone's top 10?

 

[RampedRaptor]

Built a nice rifle out of one of the top billet receiver companies match set and was shocked at how poor the lower and upper mated. Did some more research and ended up purchasing the aero enhanced set to try out on a 243LBC. Still gathering parts but it looks like it has potential for the time being.