[BenG]

Any of the 3 of us can install either an Rhop or a flat hop with ease, you can probably figure out a flat hop that will give you decent results on your own, if you choose to do it yourself let me know and I can give you a few tips, both Thunder and I are located in Calgary and Pesto is out east. flat hop and r hop both require modifying of the hop up sleeve to make it flat, hence flat hop, this modification cannot be undone, but buckings are like 5$ so who really cares. ghop was the precursor to rhop, I did some futzing with it a while ago and was never able to get super stellar results, besides its much easier just to get an rhop these days which is much better, or a regular flat hop with a G&G green bucking, which is better (than ghop) and requires not nearly as much effort as the ghop. The flat hop with G&G green bucking is basicly the same as an rhop, however if your building a true, genuine DMR, then you will see a benefit from the rhop as pesto said it will be marginally more consistent, but for general use it really doesnt matter, although it isnt that much more costly and time consuming to justify not having the best hop up system for a gun so you might as well rhop it no matter what. As I mentioned earlier youll need a flat hopped bucking either way, and picking the best bucking will differ slightly for the flat hop or rhop. With the flat hop you want a bucking that is grippy and seals well, with rhop your only concern is sealing well, fortunately most buckings that seal well grip well and vice versa, the G&G green is my personal favorite for both purposes, ive heard rave reviews from the prommy purple bucking but it is 4x the cost and is only at best marginally better then the G&G green, if at all.