Drop In Quadrail September 18, 2020 Reviewer: G.C. from Abilene, TX United States For the price you cannot beat it. If your looking for a quadrail and dont have $100 + to spend or dont want to go through the trouble of removing your front sight base and barrel nut to install a free float quadrail then look no further. There was a tiny bit of slop at the front between the rail lip and the side of the endcap. To remedy this i cut strips of duct tape (actual aluminum a/c duct tape) and built up the outer lip on one half of the rail where it goes into the end cap. I applied aluminum black to the strip once i was happy with the fit so it wasnt noticable at all under the endcap. The layers of tape made that half (the half that doesnt go over the gas tube) fit very snug into the end cap and forced it closer together with the other half of the quadrail eliminating all slop. The barrel nut side has pins that slide into the teeth on the barrel nut that keep that end from moving at all so there is zero slop on that end. But for 20 bones it was well worth it.



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