Not for ar-10 with rifle length buffer tube - GUNTEC USA AR-15/AR-10 Adjustable Flat Flex Chrome Stock Spring

This spring feels smoother and doesn’t have that usual twang like with the standard buffer spring, but one thing to note about this product is that it is too short and soft for an AR-10 with a rifle length buffer tube, which reduces its ability to slow the bolt velocity sufficiently especially when shooting suppressed. Additionally, it lacks the tension to ram the next round into battery when the rifle collects enough carbon fouling. This might work well with a carbine length 308 buffer tube but based on my experience with it at the range, tthis spring is more ideal for AR-15s. I purchased this for my 308 Super SASS build, but like i said, it was too short and soft, so I ended up moving the spring to my MK12 mod 0 which was a match made in heaven.