So I got this eagle arms side charger upper receiver and carrier...

[Johnny C]

Thinking of building it into a .300BLK with this barrel...for use on my current SBR'd lower when my .30 cal suppressor comes in
KAK SPECIAL 1:7 5R 300 BLACKOUT 6.25 INCH PISTOL STAINLESS BARREL "BABY BLOND"

Question is, shooting suppressed and unsuppressed, is an adjustable gas block generally necessary to get these things running right?

 

[Sling10mm]

I am new to 300 BO but I put an adjustable gas block on mine. The subsonic load that I have worked up will not cycle the firearm without the suppressor on. I guess what I need to do is load that round a little hotter until it cycles without the suppressor, and then turn the gas down when I want to run it suppressed? Or I guess I could only shoot that round suppressed.

 

[romad7]

A well built gun with good parts shouldn't need an adjustable block. I have an 8.2" barrel and it runs supers/subs suppressed/unsuppressed with no gas problems.

edit: Just notice you said 6.25", damn that's short. The main issue with gas systems is the distance from the gas block to the barrel end. The description does say that you'll likely have issues with subs unsuppressed. An adjustable gas block won't give you more gas than the hole will allow. But it's almost pointless to shoot subs unsuppressed so you might be fine with a normal block.

 

[Johnny C]

Thanks, guys.
I wonder if A Noveske switch-block could be made to work on this?
Noveske offers one on a 10.5" barrel and they can be bought without the barrel.