300 BLK SBR Upper recommendation

[razor488]

I am thinking about doing a form 1 and converting my Colt lower to SBR... I read this article below where the guy paired the AAC Upper with a Franklin's Armory lower and seemed to love it. Would you guys recommend I do a form 1 and pair the colt with something else, or I could just buy the AAC MPW through form 4? What uppers would you recommend?

p.s. I am planning on doing a form 4 on the new Saker 762 suppressor.


Building the Perfect 300 AAC Blackout Rifle | The Truth About Guns

Thanks!

 

[thetonk]

AAC uppers are nice. Noveske are nice also. But expensive. I have a 16" AAC. It shoots great if it's an older colt. I would leave it alone. Especially with the big holes and all.

 

[Company Man]

I have the 9" from AAC, runs like a champ.

 

[Diprivan1]

I have a number of .300 blkout pistols and my favorite is the PWS MK109. It's newly released a few weeks ago. It's piston (long stroke), has a 4-setting adjustable gas block, and is more accurate and softer shooting than my other uppers. Definitely easier to clean than DI. Just another option to throw out there.

 

[mdmorrow]

I'm working on one now and will throw some pics up once my stamp comes in next month or so. It's a DD upper & lite rail II 7", Noveske 8.2 lo pro barrel, WMD nib-x BCG, BCM mod 4 charging handle. Lower is factory DD with a JP silent capture buffer. I'm waiting on the new 7.62 saker for the can.

 

[rjacobs]

AAC generally runs everything.
Noveske generally runs everything, but might not run subsonic unsuppressed.

The rest are hit or miss as a TON of manufacturers dont spec the gas port correctly and thus it is drastically undersized. This is the biggest issue I see with 300BLK barrels. Every time I read a thread on "my 300BLK is short stroking" "fail to lock back" "jamming" "insert other failure here" its generally a result of an undersized gas port.

 

[USMC-FURY]

Tune you're own, I recommend a 10.5 in match barrel (all powder is burnt in first 9 in) , aero upper/lower $68.00 ea on gunbroker(Aero makes spikes) JP silent capture spring (use the white spring) JP lightweight BCG (6.2oz) half the weight of a regular BCG, Spikes dynacomp and a Vltor adjustable gas block and you can say bye bye to recoil! Then send the upper and the jp light weight BCG to this company for a better than nickel boron coating: Mad Custom Coating » Micro Slick

 

[USMC-FURY]

PS this guy gets Match barrels n giessle triggers way cheap! Tell him USMC-FURY sent you


[email protected]

 

[USMC-FURY]

AND if you put the SIG "brace" on it you don't need a tax stamp and yes you can fire it from the shoulder legally.

 

[tomthebaker]

I have a 10.5" PWS 300 blk pistol. With Law Tactical folder it fits in a kid's book backpack. I like that so much that I bought another one in 556, 7.5".

The 7.5" 556 is a fire-breather, but I expect the suppressor will fix that once the ATF coughs up the paperwork.

I put sign knurled buffer tube and braces on both. The biggest advantage for pistols vs. SBR's here in Oklahoma, is that it can even be an open carry pistol. Not that I sling it in Walmart, but I can keep it loaded and in the front of the truck.

 

[Rogue111]

AND if you put the SIG "brace" on it you don't need a tax stamp and yes you can fire it from the shoulder legally.

False, the lower receiver must be designated a pistol lower & since he is converting a rifle lower I believe he cannot use it as a pistol lower until his form 1 clears. Can someone else confirm?

 

[Armed Ferret]

False, the lower receiver must be designated a pistol lower & since he is converting a rifle lower I believe he cannot use it as a pistol lower until his form 1 clears. Can someone else confirm?

If the lower was transferred as a stripped lower ("other" on 4473) and never had a stock, then he could build as a pistol.

If it was sold as a rifle or he put a stock on a stripped lower, it's now a rifle, and a pistol/sbr upper can't go on it till he has a stamp in hand.


OP--you could also build an upper if you want. I've priced out (as soon as I'm done with a couple other builds in progress; stamp went pending in December '13) components to build a 10.2" upper around a Rainier match barrel for well under half what a complete upper would cost. I've already built off a coupe of their select barrels (one 18" for me, one 16" for a pard) and if those are any indicator, the match will shoot far better than I "need" it to.

 

[tsavo303]

I just ordered a PSA complete 10.5" chrome lined upper for $430, stripped lower for $50,and pistol kit for $100
will give a review once i get it. they shipped it, but it hasent arrived

 

[Dirty D]

AND if you put the SIG "brace" on it you don't need a tax stamp and yes you can fire it from the shoulder legally.

Before any of you buys the Sig brace take an AR pistol and put the buffer tube in your shoulder and fire away, I fired approx. 60 rounds of M855 this way and it wasn't uncomfortable at all.

 

[RyeDaddy]

I have a form 1 SBR. I own both a Noveske 10" 300 BLK upper and the AAC 9" 300 BLK. Just about same/same for reliability, except there was one batch of ammo from one small manufacturer that would not chamber in the Noveske but the AAC ran through with no problems. Noveske and the manufacturer sorted it out and it was said the Noveske has a tighter chamber than other barrels, the ammo maker adjusted their process to address it. Newer batch I bought has no issues. Both uppers cycle supers and subs with or without the can.

I like the handguard of the Noveske better than the URX on the AAC, but not by a huge margin. I'm not adding accessories to the rails, so it's just about the way the two different handguards feel to me.

Doing a Form 1 is not a big deal so long as your Colt lower has standard sized pins to use all of today's uppers. Saves you some $$ over buying a complete rifle. You could use that towards a short 5.56 upper, and have twice the fun.

Here's a pic of my SBR with a 12.5" 5.56 Noveske upper installed, 10" Noveske and 9" AAC blackout uppers are above. Did my best to crop out the bathroom counter in the pic.

 

[RobertB]

What's the thoughts on the straight spikes 300 pistol upper? You can get complete ones for 850. That's what I was fixing to buy.

 

[shoot4fun]

I did my F1 on a M&P Sport lower (cheap). While I was waiting I got a good deal on a Noveske 10.2 300 BLK upper with a Spikes FF tube so, to be perfectly legal, I built a pistol lower on a stripped receiver for the upper. Now that I got the paperwork back I have the SBR lower and 300BLK upper mated with a YHM Phantom. It functions perfectly with subs (factory & hand load) and holds just under MOA at 100 yards. Long story short, I would whole heartedly recommend the Noveske upper.

 

[MSTN]

My personal favorite V-SBR of all the ones I've ever built is easily this 8.2" Noveske barrel .300 BLK:

Yes, I know the 6.8 SPC (a caliber I truly admire) has way more horsepower, but the ability to use tried and true 5.56M bolts and magazines with the .300 BLK is hard to beat. And this tiny thing is far more powerful and significantly more accurate than it needs to be for its intended engagement envelope. This particular upper runs like a top - has NEVER ONCE malfunctioned. Even with the funky NEA stock and weird bolt carrier.

And, if by chance your ego needs a little boost every now and then, just take this to the range where others may see it. Your public speaking skill set will get a better workout than back in high school when you tried to explain to the judge that 70 MPH ticket in a 35 MPH speed zone …..


PS: LOVE that Eberlestock "Cherry Bomb" pack!

 

[jasonfaz]

MSTN, how is the NEA working out? I've been contemplating the same kit, but I'm concerned with the weight (running a UCIW kit at 15.9oz vs the NEA at 24oz) and the cheek weld. Do you get a solid cheek weld with the NEA fully collapsed? That set up still runs an inch shorter than my 8.2" 300 BLK with UCIW, and considering the main goal is to go as short as humanly possible, I've been going back and forth on whether to try out the NEA kit. Any feedback is greatly appreciated!

 

[Armed Ferret]

i don't have an NEA, but I would bet the weight toward the back of the rifle would be far less noticeable than putting it forward with a long heavy barrel.

If anything, it may help balance a suppressed gun a little easier.


When a US distributor starts carrying them and we no longer have to pay a COD ransom of nearly 50 bucks just to be allowed to take possession of something we've already paid for, I'll probably pick one up.

 

[Benmk19]

PWS guys with a MK109, would you build a custome or buy the rifle you have?? Debating right now, have heard great things about the pws pistols.....

Thanks!

 

[Salamander1973]

My personal favorite V-SBR of all the ones I've ever built is easily this 8.2" Noveske barrel .300 BLK:

Yes, I know the 6.8 SPC (a caliber I truly admire) has way more horsepower, but the ability to use tried and true 5.56M bolts and magazines with the .300 BLK is hard to beat. And this tiny thing is far more powerful and significantly more accurate than it needs to be for its intended engagement envelope. This particular upper runs like a top - has NEVER ONCE malfunctioned. Even with the funky NEA stock and weird bolt carrier.

And, if by chance your ego needs a little boost every now and then, just take this to the range where others may see it. Your public speaking skill set will get a better workout than back in high school when you tried to explain to the judge that 70 MPH ticket in a 35 MPH speed zone …..


PS: LOVE that Eberlestock "Cherry Bomb" pack!

I would love it if you could send me all details on this build would love to build this exact one just in sniper gray so if you could send me stats and names of parts on build would really appreciate it one of the best I have ever seen anywhere on line thanks Chris...if you could text info 13606449862 or email it to me at [email protected]...thanks again

 

[Snuby642]

I have an AAC upper 10.5 on a standard lower love it.
Not sure a colt lower will work due to the pins.

 

[Salamander1973]

What grip stock and handrail and flash hider it's bad ass my friend

 

[Almonz]

I suggest just building your own. I never thought of 300 BLK as a cartridge to pair with a match barrel. It's a great cartridge for suppressed shorter range work.

 

[Ravenous]

I suggest just building your own. I never thought of 300 BLK as a cartridge to pair with a match barrel. It's a great cartridge for suppressed shorter range work.

Lot's of people are getting sub MOA out of them though. This Rainier Ultra Match review shows great results with a 10.5. If you have the scratch for it why not go for it. My 8.5" Noveske build is probably one of my favorite guns. Certainly agree with building your own, always more fun that way!