Both the HFT 500 and Goldstar are new rifles, the HFT500 has had good results so far and even though it is not regulated the knock open valve is very consistent. Pete Sparks has been using one and has has quite a few wins.
The Goldstar has just been released and so far I have not heard of any issues.
Personal the AA would be the gun for me as it is proven, I would also look at a HW100 a Mpr or second hand Steyr.
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