interesting engineering but as a UK resident I can hand on heart say do NOT do this in the UK without research as our punishments are severe! our limit for unlicensed air rifles is WAY lower than this and in our current climate would likely see you jailed or severely fined! NO JOKE (from memory around 16 joules I think but I'm old so remember the older measurement) ANYTHING else is fac no question if you are not a holder of a fac (fire arms certificate) specifically for above 12 ft lb air rifles go discuss it with a gun shop as they can quote law before you break any! as an owner of many custom rifles the work is way less than you think in cost and it comes back certificated and completely compliant with all applicable laws best wishes and much love to all
"PCP TUNES".do them..i think its american,but theyre 110 for the valve alone and currently out of stock of the kit..plus its £20 shipping..im gonna email these above and hopefully someone speaks english there...
if you get them or try from the above sales site for a valve(armurerie-auxerre),theyre a french supplies place and will not ship to england.anywhere in europe but us.if youve friends there ask them to recieve it and send it to you maybe?trust me ive been intouch and begged!haha
having said that,its well worth it if you can sort it from them(use freinds etc)as they cost on £25..29 euros as apposed to the robbing fuckers at PCP tunes at £130
www.armurerie-auxerre.com/custom-valve-pour-walther-rotex-20-more-powerful.html Buy bullpup rifle butt that works with full power valve Contact me... www.forum-airguns.com/t74474-walther-rotex-rm8-version-bullpup?highlight=bullpup ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TOaLi0NO0TI.html
Do not bother if from UK, 24J teeters on the edge of legality, so any power increase would have to be on your FAC. Highly unadvisable for such high power rifles.