Fitting a Powerkit68 to the Umarex HDX 68

A massive improvement to the Umarex HDX 68, this is the 7.5 joule version and after fitting the powerkit68 is now close to 30 joules. Get your Powerkit68 here: https://en.homedefence-24.com/Product... ▶️ If you can help support the channel or just want to follow us on social media, then please click this link for our other sites: https://linktr.ee/maddogairguns