Leapers utg bipod - UTG Pro Recon Flex M-LOK Bipods

I mounted this bipod on a 16" free float rail on my AR-10. the bipod seems to do well. I wish there was a knob to lock down the top pivots like there are on the bottom. It had a lot of fore-aft movement at the top pivot joints while attempting to load the bipod while settling into a prone position. The 6-9" model is too short for a 25 round magazine in the AR-10, I assume the same would be true for a 30 round in an AR-15. I wish I had gotten the taller model but that's not the fault of the product. This looks cool on the rifle and performs well enough for the price.