300BlkTalk

All things 300 AAC BLACKOUT
It is currently Thu May 23, 2013 2:52 pm

View unanswered posts | View active topics


Board index » 300 AAC Blackout General Discussion » Main Discussion Area

All times are UTC - 5 hours [ DST ]



Post new topic Reply to topic  Page 1 of 2
  [ 14 posts ]  Go to page 1, 2  Next
  Print view Previous topic | Next topic 
Author Message
vugger
 Post subject: Nice Job AAC!
PostPosted: Wed Jul 18, 2012 7:58 pm 
Offline
Member

Joined: Mon May 10, 2010 12:12 pm
Posts: 16
Location: USA
Midway is stocking the new 9" uppers and they look good. Bolt carrier is all nickel boron, not just the cam pin. Barrel is 1/7 twist with a pinned gas block! Nice upgrades AAC... very nice.

Robert, any idea when the 12.5" and 16" uppers will be released?

Now please release some AAC lower receivers :mrgreen:
Top
 Profile  
 
copenhagen
 Post subject: Re: Nice Job AAC!
PostPosted: Wed Jul 18, 2012 9:35 pm 
Offline
Senior Silent Operator
User avatar

Joined: Mon Oct 18, 2010 8:37 pm
Posts: 100
Location: South Carolina
I just looked at their listing and it said the bolt carrier was mil-spec- did you see a picture of it anywhere?
Top
 Profile  
 
rhotondm
 Post subject: Re: Nice Job AAC!
PostPosted: Wed Jul 18, 2012 11:25 pm 
Offline
Member

Joined: Tue May 01, 2012 2:07 am
Posts: 36
Yeah. I think these are the same uppers that have been out a while now. Not seeing anywhere that says the BCG is NiB.

It says:
"A heat-treated, full auto bolt carrier with internal chrome lining and properly-staked gas key houses a Carpenter 158 steel bolt assembly."

Glad to see they are carrying them though.
Top
 Profile  
 
beye
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 9:52 am 
Offline
Industry Professional
User avatar

Joined: Fri Apr 13, 2007 10:08 pm
Posts: 119
Location: Lawrenceville, GA
We just got a big batch of 16" Uppers that have the NiBX BCG & 1/7 twist, they look great!

http://shop.bullseyeindoorrange.com/Adv ... -Upper.htm

_________________
Jeremy Powell
Bulls-Eye Indoor Range & Gun Shop
221 W Crogan Street
Lawrenceville, GA 30046
Phone: (770) 963-6556
Fax: (770) 963-8922
www.bullseyeindoorrange.com

E-Mail: bullseye_doc@hotmail.com
Top
 Profile  
 
300Blk
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 10:13 am 
Online
Site Admin
User avatar

Joined: Mon Apr 25, 2005 9:31 am
Posts: 4703
Location: USA
The carrier and cam pin are Ni-B. The bolt is conventional.

Nickel Boron (Ni-B) UCT EXO coating has a very high hardness and lower friction than either Chrome or Nickel Teflon. There is a base layer of high-phospherous Electroless Nickel which ensures the extreme corrosion protection absent from other Nickel Boron carriers that use a single, thinner layer.

Base material is highly polished before coating to ensure the smoothest surface finish.

Carrier and cam pin dimensions are custom machined to account for the thicker coatings rather than the more common process of simply coating a conventional carrier with a thin layer.

Carpenter 158® phosphated shot-peened bolt to ensure precise dimensions with no concerns for hydrogen embrittlement in the critical lug area.

Special green o-ring tested to not bind even at -40 degrees F.

Extractor spring made from premium ultra-strong wire - low fatigue design ensures the longest possible life.

Extractor pin made from 300 ksi S2 tool steel - not the much lower strength S7 more commonly used.

Properly-staked carrier-key with Permatex® gasket-seal compound ensures no gas leakage.

_________________
www.matter-replicator.com
Top
 Profile  
 
velo555
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 11:35 am 
Offline
Silent But Deadly
User avatar

Joined: Wed Mar 28, 2012 9:14 am
Posts: 201
Location: Upstate SC
300Blk wrote:
The carrier and cam pin are Ni-B. The bolt is conventional.
-Nickel Boron (Ni-B) UCT EXO coating has a very high hardness and lower friction than either Chrome or Nickel Teflon. There is a base layer of high-phospherous Electroless Nickel which ensures the extreme corrosion protection absent from other Nickel Boron carriers that use a single, thinner layer.
-Base material is highly polished before coating to ensure the smoothest surface finish.
-Carrier and cam pin dimensions are custom machined to account for the thicker coatings rather than the more common process of simply coating a conventional carrier with a thin layer.
-Carpenter 158® phosphated shot-peened bolt to ensure precise dimensions with no concerns for hydrogen embrittlement in the critical lug area.
-Special green o-ring tested to not bind even at -40 degrees F.
-Extractor spring made from premium ultra-strong wire - low fatigue design ensures the longest possible life.
-Extractor pin made from 300 ksi S2 tool steel - not the much lower strength S7 more commonly used.
-Properly-staked carrier-key with Permatex® gasket-seal compound ensures no gas leakage.

WOW!!!

Robert you just made me a very happy man. My lower has been ready for a little while now but I was waiting to build or buy an upper till more of the 1:7 barrels were out. Recently I decided to go with the 9" AAC upper and almost bought it when Brownells got them in stock. They quickly were out of stock. I look at that list of improvements and now I feel good about waiting. Your (and AAC"s) attention to detail is astounding. How did you get all these changes past the bean counters? Just kidding. Great job!!! Can't wait to get mine.
Top
 Profile  
 
300Blk
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 11:46 am 
Online
Site Admin
User avatar

Joined: Mon Apr 25, 2005 9:31 am
Posts: 4703
Location: USA
I created this for the military and then the project and sales manager agreed to offer it on all models.

_________________
www.matter-replicator.com
Top
 Profile  
 
vugger
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 1:13 pm 
Offline
Member

Joined: Mon May 10, 2010 12:12 pm
Posts: 16
Location: USA
Robert,
These are so nice,I might need to get a 16" too. I have a URX III that I would want to change it out for. Is the new gas block just pinned? Or is it pressed on?

Also, will the 12.5's have the same updates?

Thanks!
Top
 Profile  
 
300Blk
 Post subject: Re: Nice Job AAC!
PostPosted: Thu Jul 19, 2012 1:22 pm 
Online
Site Admin
User avatar

Joined: Mon Apr 25, 2005 9:31 am
Posts: 4703
Location: USA
The gas block is just pinned, not press fit.

All of the barrel lengths are pinned.

All of the uppers are getting Ni-B - but don't assume an upper has it, has pinned, has 1/7 - as there are many distribution channels and not everything gets out at once.

_________________
www.matter-replicator.com
Top
 Profile  
 
DrillersGoDeeper
 Post subject: Re: Nice Job AAC!
PostPosted: Fri Jul 20, 2012 12:28 am 
Offline
Member

Joined: Thu Aug 11, 2011 1:30 pm
Posts: 28
Location: North Louisiana
Since my new AAC 16" upper is one of the 1/7", would it be safe to assume that it has all these upgrades? I recently bought it from a site member here, but really havent gotten to shoot it much...

_________________
AAC 16" 300 AAC BLK 1:7", BCM lower
Wilson Combat 16" 300 AAC BLK 1:7" Spikes Tactical lower
S&W M&P 15 556 AR 1:8" 5R
to name a few...
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 2
  [ 14 posts ]  Go to page 1, 2  Next

Board index » 300 AAC Blackout General Discussion » Main Discussion Area

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: Abull, bigbigpig, Bing [Bot], Buckjammer, Cbbuff, djcone, jryock, JZinNM, KalamaMark, kuroTexan, l8fr82hub, mrbumps, mrmiyagiaz, MSN [Bot], munchie3409, ncorry, RickR22, RiflemanWI, rockrivershooter, RPM509, SCNV, sfcbush, Stringmaker, threepdr, Unobtanium, utlonghorn58, vz58 and 257 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group