Vltor PCC buffer and A5 extension

[HKGuns]

FWIW, Pistols can be any length.

No, that depends entirely on State law.

[Dust devil]

For what it's worth, my 9mm has a full heavy Odinworks 9mm adjustable buffer in a carbine length tube and it runs nice. It also has a LAW tactical folder so the carrier extension adds a little weight but I had to cut my carrier weight by about 5/8" to fit the extension so it's probably not far off a non-folding setup.

I haven't bothered trying to tune it with weight because it runs fine. I think the spring is just standard 5.56 carbine spec.

You don't need to complicate things if simple works...