Subsonic Feed issues

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10-19-21, 21:05
colt107

Subsonic Feed issues

Hello, I am currently having some 300Blk feeding issues and looking to see if anyone can give any insight. It cycles everything supersonic fine, But when it comes to subs she struggles. It has a dedicated nomad 30 suppressor on it. BA pinned .750 gas block. Rest of parts list will be listed Below. It has an A5 buffer system, but i have to drop it down to a A5H0 to get it to pick up a new round 50% of the time. Never locks open, Again this is with subsonic ammo. Any insight is great.

BCM upper
10.3 Ballistic advantage barrel w/ .750 pinned gas block
Black river tactical EZ tune gas tube.
SLR rail.
Black river tactical BCG
A5H0 and springco Green spring.
10-19-21, 22:10
223to45

Being suppressed, I would think it would cycle fine.

What mags you using??

Maybe the EZ tune tube is restricting too much??

I run a 8.5" and cycles 220 gr subs just fine without being suppressed.

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10-19-21, 22:13
223to45

Just seen that it doesn't lock back.

Do you have a standard gas tube??

I would try that first.

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10-19-21, 22:16
colt107

3 different mags, metal surefeed, lancer 300blk mag, and Magpul 300blk mag. My guess is probably the gas tube may be restricting like you said, but wanted to get some opinions incase.
10-19-21, 22:18
colt107

Quote:

Originally Posted by 223to45

Just seen that it doesn't lock back.

Do you have a standard gas tube??

I would try that first.

Sent from my SM-G991U1 using Tapatalk

Will have to see if I have an extra gas tube if not I’ll pick one up and give it a try. And it never locks back with subs, and it 50/50 cycles a new round. Either cycles or dosnt pick one up, but at random.
10-20-21, 07:31
Clint

What is your order #?
10-20-21, 09:13
themonk

Were you having overgasing issues before you installed the EZ tune gas tube? I am confused why you chose to go that route vs an adjustable gas block on a 300 blackout gun?