300blk upper

[timelinex]

Can you guys give me some recommendations for built 300blk upper. I'm not against building one, but I feel like prebuilt ones probably hold their value better.

I have heard that 10.5" is where its at, but at the same time I have read that all the powder burns by 9", so why would anyone want one longer than that?

The purpose of this rifle is just to have a nice subsonic AR and it will be shot temporary with a 338 thunderbeast (I am in the process of looking for a smaller 30 cal suppressor though). I want it to be as reliable as possible and I do not mind paying more as long as it holds its value and its high quality. I DO NOT want to have to be put on a waitlist or something though, unless the wait time is less than a month or something.

So far I have seen 3 popular options. the 9" AAC , the 10" Noveske and the 'cheapie' 105" PSA option..

Pro's/con's, suggestions, lets hear it all!

 

[texas_vet00]

KAC SR30 Upper in 11.5 is my vote...

 

[Javelin]

KAC makes good stuff. Noveske makes good stuff also.

 

[Javelin]

And 8" is my recommendation ... I have both 10.5" & 8" and much prefer the 8"

 

[timelinex]

KAC SR30 Upper in 11.5 is my vote...

So why would someone want to go with 11.5" when everything gets burned in in 9"? What am I missing.

 

[Redmanss]

Seekins 8": Pro Series 8" - SPROv3 - Pro Series Uppers - Complete Uppers

What is the OD of your .338 suppressor? One advantage of the MSCR rail from Seekins is the large 1.8" ID, allowing you to contain the suppressor body inside of it while getting the longer rail, even despite the short barrel.

 

[dddoo7]

I really like the Seekins stuff. Both of my SBR's are Seekins. Noveske makes good stuff too.

 

[-Nick-]

For the money you really can't beat Seekin's barrels. Noveske are nice, but I think they're overpriced and their CS has been dropping off. If they don't quit burning some of their distributors they're gonna find that riding out on past reputation is only going to last so long...

 

[Cobracutter]

If your already thinking about resale, then why are you buying it in the first place?

 

[texas_vet00]

I just liked the 11.5 length better when it came to the URX rail covering all the way to the now SOCOM brake...9.5 version has some barrel showing. Also, looks like KAC may no longer be in the 11.5 length in the future so this makes it somewhat of a rare item perhaps.

 

[Masked]

Built my own for like $900 and it's sub MOA...

I went 16" because getting a SBR in my area is going to be a PITA...But, working on that now.

 

[brcook03]

I run an AAC factory 9" upper and like it. It's the older model with 1:8 twist but have not run into any issues with stabilizing heavy bullets.

 

[timelinex]

So then anything past 8-9 is just for looks reason? (if the point is subsonic use)

 

[velillen]

Going past 8-9 is either personal preference, legal reason (sbr), or filling a role such as wanting to shoot longer distances (which also falls under personal preference too).

I have both a 8.2 sbr and a 16". Haven't played toooo much with the 16 inch but it is easier to be accurate (group shooting) with supersonics in my experience. Not that the 8.2 isn't accurate (it is) but I find I'm more consistent with the longer barrel. But for banging steel either works awesome! My sbr shoots subs only but the 16 inch I'll shoot both through it

 

[Outlaw45]

Built my own for like $900 and it's sub MOA...

I went 16" because getting a SBR in my area is going to be a PITA...But, working on that now.

What barrel and gas system did you go with?

 

[timelinex]

Well I've narrowed it down to:
8" seekins
the new 8.5" noveske
9" aac

I gotta decide soon, shit! They all have their pluses.

I like that the seekins has the rail come further than the end of the barrel. It hides the suppressor a bit and thats sweet. But it doesn't come with any attachments at the end so I would still need to get a flashhider. (not big deal). Also, I'm not sure if 8" isn't just a tad too small.

The noveske already has a silencerco flashider to fit the can I am buying and its also a noveske.

The aac is cheaper, gets just as many rave reviews as the others but I'm guessing its a bit lower quality machining compared to noveske and seekins. Not sure I'm giving anything up though?

decisions decision.

 

[Javelin]

I tell you why I chose Noveske for all my SBRs; they just plain run right out of the box. Yes there are cheaper options that are fine but the 3 shortys I run are Noveske because they work brilliantly like a Swiss watch.