Curious if anyone has purchased or built one. I'm in the process of several builds and one is a .300, last thing I need are hand-guards for my builds. I want to get the .300 in a 16" to cycle both super and subs consistently. I picked up a silly cheap name brand 16" barrel on clearance for $60 during Black Friday. I compared gas ports on the barrel to a 5.56 and it is noticeably larger. It does have pistol length gas. And I ordered 2 Aero Precision buffer kits today with 3oz. buffers. I'll probably throw an H or H2 in my 5.56 build. Last but not least after watching a vid from Elvis Ammo on YouTube (that the Reich Chancellor of Propaganda hasn't taken down yet) who was lobbing 230gr cast lead PC'd bullets downrange in a 16". His cycling issue was due to his BCG being melonite and not NiB so I ordered a NiB today for $90 on sale. Is there anything I missed? I ask as I will be reloading .300 down the road and I like the science behind reloading, so experimenting with different recipes is a must for me. 

I'm no 300 Blackout expert, but if a build doesn't run because the finish on the BCG is Black Nitride instead of Nickel Boron, the problem is not with the BCG, it's with the build. Good luck with the build though. They are fun!

On 12/31/2018 at 12:09 AM, TacticalITGuy said:

His cycling issue was due to his BCG being melonite and not NiB so I ordered a NiB today for $90 on sale.

That is nonsense.  NiB is nice because it's easier to clean but it does not make the rifle more functional.

 

From what I have read, if you want to run both suppressed and non suppressed an adjustable gas block makes life a lot easier.

I agree with all three of the previous comments. 

On 1/2/2019 at 7:55 AM, carl_g said:

From what I have read, if you want to run both suppressed and non suppressed an adjustable gas block makes life a lot easier.

Or buy an AAC upper. When I was looking to build a 300 BLK, I read of too many issues with trying to shoot supers and subs, especially suppressed.

i bought an AAC 9" upper and I've never had an issue with supers or subs, suppressed and unsuppressed.