Love these thing! - Armaspec AR-15/AR-10 Stealth Recoil Spring

I already owned one of these, although it was not the H2. It functions flawlessly, and cost way less than some of it's competitors. I tried my friend's JP. It was incredibly nice to shoot without the twang, but the cost was outrageous. I found that the Armaspec work just as well if not better at a fraction of the cost.