A buffer spring is a buffer spring - Strike Industries AR Carbine Flat Wire Spring

I just copied my review for the pistol version. Basically the same. Misled from all the 5 star heavy reviews. Recoil, sounds, all feels the same as the stock round wire spring. I wasted my money, but at least it wasn't too much. A buffer spring is a buffer spring when used in a naturally hard kicking 5.56 rifle, at least in my experience. What's more, a flat spring is slightly harder to remove and install because it gets caught on the retainer pin.