Looking for 300 Blackout Upper/Bbl

**jwramp** · June 22nd, 2012, 02:09 PM

Does anybody know of a shop or manufacturer that sells a 300 blackout barrel or entire upper in 14.5" with an AAC adapter already permanently installed? I've got a lower already and would be fine just getting the barrel, but don't want to go through the NFA hassle.

I just had my 14.5" 556 pinned/welded by a local gunsmith and had an extremely bad experience (took months to finish and when done they had completely mangled the suppressor threads, rendering it useless). They claimed that silver-soldering was not a legal method for affixing the adapter...

**Franky4Fingers** · June 22nd, 2012, 04:06 PM

as far as I know, unless bought, modified, and resold.....the barrels only come in 16" and 9"

Also.....leave that 14.7" pin and weld stuff alone. I just went through that myself and its not worth it in any stretch of the means.

And the silver solder is a bit of an asterisk. Most solders are silver solder. What you need to be legal is high temp silver solder which is more rare. I think it has to be 1100 degree. You much better off to just weld the dang thing with steel.

I pinned and welded mine. Then, after reading some horror stories, I just welded a bead around the whole thing. I know I'll never do another 14.7" barrel pin and weld again.

**AlpacaFarmer** · June 22nd, 2012, 04:15 PM

Get the 9" and build it as a pistol so you can use it while you wait 6 months for your stamp...thats what i did and am very happy.

**West Chester** · June 22nd, 2012, 09:28 PM

At the rate of delivery on 300aac stuff you might get the stamp before the upper...

**fastfive0** · June 22nd, 2012, 10:58 PM

There are many manufacturers who will build the barrel and pin the device for you. Check out www.300blktalk.com.

That said I don't believe 14.5" is worth the hassle with the welding/pin. There is nothing to be gained from it over 16". If you want short go with an 8-10".

**TommyG** · June 23rd, 2012, 07:16 AM

Rainier arms has their in house brand and Noveske barrels in 300 BLK 14.5 flavor. They are also offer smith services so they can pin your muzzle device.

http://www.rainierarms.com/?page=sho...300aacblackout

If those are too pricey, just buy a 16" and send it to Adco to be cut to 14.5 and pinned.

http://www.adcofirearms.com/