Noveske 10.5" GEN III Rifle: buffer weight?

[Armadillo]

Noveske 10.5" GEN III Rifle: buffer weight?
H or H2?

Going on a Magpul UBR:
"Features
Mounts on durable Entry-Length Receiver Extension tube (included) to accommodate the common M4 carbine buffer and spring"

[Iraqgunz]

Default answer is H2, although I believe that an H3 will work since Noveske is usually on the high end port wise.

[Koshinn]

My Gen2 ran a H3 with Springco blue spring, ran fine even dirty with pmc bronze .223.

I now run a A5H4 with Springco green, but I also shoot suppressed.