Pistol built around an 8" BA (Modern) barrel, with fixed gas block. All stock, but lightened buffer (1.5 oz), and 4 coils removed from Carbine spring.

stock weight BCG (also tried a lightweight 8.9oz).

Rem supersonics 100%, with LsBHO

Rem subsonics, 100% cycle, but no LsBHO

Hornady subsonics (Black 208g), 100% cycle, but no LsBHO

It's a range toy only, but I wouldn't want it not cycling at the range.

I have a Kaw Valley linear comp on it (needed to clear gas of my 7" rails)

well lubed BCG.

I've heard about the Nemo low power spring that fixed 300 subs for some folks. Not interested in enlarging gas port.

LRBHO will probably work with the subs and a suppressor.

Thanks, no plans for a suppressor at this time, but will probably use mostly supersonics as they're way less expensive than subs at this time.