I know everyone has their “go-to” filament(s) for various parts. For me with 2A, it is usually PLA+, PAHT-CF, and PPA-CF. What I have really enjoyed about this filament is how easy the supports were to dial in. They pop right off and leave a pretty good looking contact point.
My Urutau’s bolt and upper receiver, both in PLA+, developed a crack recently and figured I might as well reprint the handgaurd while I was at it.
I tried a roll of Creality PPA-CF and had issues with it breaking during the last 200g or so. Three times it snapped coming off the spool in the dryer. It did print super good, though for the first 800g. I chalked it up to maybe needing to dry it more, but at its price I just stick with Siraya’s core black.