02-13-2024, 04:10 AM
(02-13-2024, 01:45 AM)Old Bob Wrote: Aleksander ... You said your original buffer was a H2 buffer. Was that a standard Carbine type buffer? I have a VLTOR A5 receiver extension on my 6.5 Grendel AR with a Magpul UBR Gen2 stock. The instructions I had for using the A5 extension said to use the longer VLTOR buffer & a standard rifle spring. The VLTOR buffer is about .75" longer than a standard Carbine buffer. My set up seems to be working OK. Haven't had any issues with bolt lock-back with factory ammo. It has an adjustable gas block that is set to fully open to get things working OK. I'll probably put a regular gas block on it eventually since the adjustable block seems to be of no real improvement.
I'd follow grayfox advice & go to a Carbine extension with a standard gas block. Start with a standard Carbine spring & a H1 buffer. You can replace parts as needed to improve function.
EDIT: Ooops didn't see your last post before I hit the send button. Glad things are working OK now.
no problem, just wanted to clarify for anyone else reading who this may help. The original buffer was the correct vltor h2.
I run them on my 14.5 mid length, my 16” intermediate, and my 18” spr rifle length.
I do agree this caliber does seem to very low pressure. I’m still perplexed as to why none of the adjustable gas blocks ran even on open setting..