I first spotted Kastman Design and Manufacturing’s Advanced Hop-Up System (KDM AHUS) on their Facebook page, early in 2013. I contacted Robert Kastman, who owns the company and found him extremely helpful, but I parked the purchase until a few days ago…
My AHUS is already in transit from Sweden, so I’ve added the Customer Service category for going the extra mile to this post. Not just because shipping was so fast, but because Robert is so helpful.
Potentially, the AHUS combines the ease of adjustment and shot-to-shot predictability of a Marui style hop, with the consistency and reliability of all the processes which happen inside a PTW, prior to the BB hitting the hop.
The stage subsequent to this point in the process is where PTWs tend to fall down. The OEM Systema PTW hop, straight out of the box, tends towards inconsistency and fliers. Until recently, the choice has been to mod the hop yourself or send your unit to Tackleberry for what is seen by many as the gold standard PTW hop mod. The latter makes the very best of the situation in terms of hop effect, but the lack of the user friendly adjustability of a Marui style hop remains. In the final analysis, the design of the OEM Systema PTW hop is an inferior solution – designed out of the necessity to do something different to Marui, as opposed to enhancing or bettering their design.
More recently, we’ve seen the STTS hop, which was a disastrous attempt to manufacture Marcus Dodd’s impressive MDD hop. If you’re lucky enough to own a bespoke MDD, crafted by Marcus, you are no doubt very happy with it. I used mine for some time, but recently I’ve gone back to my Tac’d hops because I prefer the trajectory to that of the MDD. The bespoke MDD remains a solid performer however and includes user friendly operation via a rotary bezel.
I’ve been one of the lucky few who have used a Tackleberry Super Hop prototype. I can’t say too much about this because my role is to provide long term feedback – not provide a review at this point. But in two years of use its still my favourite hop and I’ve never had a problem with it.
So, as you can imagine, the KDM AHUS has big shoes to fill 🙂
I’m really impressed with the design of the AHUS. From what I’ve seen so far it looks very well thought out in the way it goes together and quite aside from the lure of using Marui style rubbers, using standard AEG barrels is a massive selling point.
More on this when it arrives…