can stock 98s use HPA?

yep

ya just make sure it is a high pressure tank and it will work great.

Thread about HPA and stock guns

sorta related thread about the comp air LPK

But everyone says 850psi. Mine ran stock at around 500psi and 260-280fps.

(notice the trend of people getting flamed about asking this question)

Edited by Layman

bluemunky42 wrote: duno y u would need it. stock runs fine off c02 unless u already have hpa and r getting a 98c

Some benefits that I found with HPA over CO2 was the ability to use it in colder temperatures without adverse effects to the valve, more consistant FPS in fluctuating temps (CO2 shoots hotter in higher temps, etc.), and when I started buying different guns I already had HPA for them. Sometimes you can't use CO2, like in most high end guns. Very rarely can you not use HPA with a gun, ex. 68 Specials and other siphon tube guns.