I'm looking to buy ABB rings, so I contacted Ben @ Polar Star Airsoft, but he hasn't contacted me back and it's be almost two months. I assume he's busy working on the HPA V2 gearbox, so I'm looking to see if anyone makes ABB rings so I can buy some. I'm looking for someone who's done this before and has experience in shop-work, not some 14-year old kid. If anyone makes ABB rings or knows someone who does, please post here or PM me. Thanks!