Does anyone have experience with
this hop up rubber, which incorporates a "SCS" nub? Personally I don't think the price is justifiable, but it's certainly an easy DIY with a spare rubber.
Brian if you still remember, I snapped the hop up arm. It was impossible to source a new/used one, so as a result I made one myself by cutting and bending some metal LOL. Ghetto but it works and hop up is adjustable!