I have an A5, yes you are correct about swapping weights resulting in A5h1 or A5h2. The weight with the spring is steel in all models except the heaviest one A5H4 where it too is tungsten. I've swapped weights in mine a couple of times and so far have settled on the A5H2 at the moment and will say it is very smooth shooting in my 14.5" grendel. Be sure to insert the tungsten weights first, finishing up with steel weights with the one with the spring being the last to be inserted.
I used these weights as they had a nice rounded shoulder on them.
https://pur-tungsten.com/product/tungste...r-weights/
I used these weights as they had a nice rounded shoulder on them.
https://pur-tungsten.com/product/tungste...r-weights/

