UncleDano

He had the wrong spring and or buffer in it and is probably to embarrassed to report back. my 2c.

Hey foxhunter, any luck on resolving the problem as yet?

?

Any update from the OP on what has been tried so far?

Here is some in stock and cheap. PPU is good reloadable brass - tried it before...

"The dishonest" what?

You'll note that all selections show 'Out if Stock'. :(

I don't recall you mentioning whether you were using a 55gr or an 88gr. bullet loading.

if the carrier is dragging on the gas tube it'll act like undergassing, so making sure the tube to key alignment is correct. not only...

Right!

If it is under gassed and leaking at the gas block, then why does it perform perfectly with the A2 stock (w/heavy buf) installed?

Sorry, but short stroking is not only related to not getting enough gas! If it is ejecting at 4:00 o'clock, he is not under gassed, but...

Yes, Get an H3 or heavier buffer and give it a try. Report back.

that makes sense, the rifle is ejecting fine with a throw of 4:00 but does not lock open on the last shot.

Just to add the correction of the issue that has been addressed many times now: A 16" barrel with a rifle length gas tube length is a...