MSA 45 min. 4500PSI CF tank to PCP rifle hose?

As said above, probably CGA347 fitting on the tank, but you'll want to confirm. Here are two of the USA made higher quality options. I'd recommend spending the extra money since the fill kit is probably more important than the tank. You are going to use it a LOT and you won't want inaccurate or failing gauges, or ill-fitting poorly made fittings/hoses to blow out at the high pressures we are working at with HPA. There was a recent thread on airgun accidents and nearly all of the HPA failures were related to filling. There are lots of pieces in a fill kit that can fail.


http://experthpa.com/cart/cart.php?m=product_detail&p=66

https://airtanksplus.com/product/stikman-scba-pcp-fill-system/