Buffer tube - Geissele Super 42 Braided Wire Buffer Spring And Buffer Combo, H2

Seems to be well built, still have used it, but resets quickly. The spring is strong and very well build the a2 buffer seems good
Only A2-A3 available, wish they would offer an A1
Using this for an HK416 5.56, other build I’m using the JP spring system and those are pretty solid