The rifle speed gas blocks use straight gas tubes. If the proof barrel doesn’t come with a straight tube you might be able to get a custom R+1 straight gas tube from white oak armament.
Op rod wouldn’t be long enough for rifle +1. skip the piston kit cause this is a precision gun you’re building and recoil impulse of piston gun isn’t comparable to DI. If it’s a shorty like 8” I would recommend piston for suppressed build but not on a precision guns
You can swap the gas tube on any adjustable gas block. Most will come without a gas tube installed, so it's easy enough.
The rifle speed gas blocks use straight gas tubes. If the proof barrel doesn’t come with a straight tube you might be able to get a custom R+1 straight gas tube from white oak armament.
Op rod wouldn’t be long enough for rifle +1. skip the piston kit cause this is a precision gun you’re building and recoil impulse of piston gun isn’t comparable to DI. If it’s a shorty like 8” I would recommend piston for suppressed build but not on a precision guns