Upgrading to the razor 1-6 on my next build so up for sale is my 1-4, I've had it for a few years atop a 6.8 and have never had any problems with it. It is FFP with the TMCQ(MOA) reticle and comes with a Burris P.E.P.R. QD mount. Also comes with the box and shims it came with from the factory.
link to scope
http://shop.opticsplanet.com/vortex-viper-pst-1-4x24-riflescope.html?utm_source=google&utm_medium=cpc&utm_campaign=plusbox-beta&gclid=Cj0KEQiAsNyxBRDBuKrMhsbt3vwBEiQAdRgPslU1h-l692azB9mJxcAlZhMMVyGZBg8OcZFCSXEiaXUaAvcf8P8HAQ
link to mount
http://www.opticsplanet.com/burris-ar-tactical-mounts.html?options[]=8129-105004&options[]=8311-121588
price is $425
http://i89.photobucket.com/albums/k204/stangsn95gt/Guns/20151102_154224_zpsugonoiy0.jpg
http://i89.photobucket.com/albums/k204/stangsn95gt/Guns/20151102_154203_zpsviv1r4xf.jpg