LL4D Umarex HDR50 - ZRam ZExtension installation 

Note: Valve block also removed for testing. Z-Ram Z-Extension does not include an indicator cap. You must reuse your own.

Great test Sean. Finally you put on the Z-ram housing. Very nice numbers 😃💥👍

Wow thats great power 25j with a short barrel is 🔥. Interesting test Sean great video.

very cool video and perfectly explained. You did a better job of making the hole in the case than I did 👌

I see some ppl put a couple of those extensions together into one piece. Nice test Sean !

even in wood , especially harder woods , i have seen a drill bit catch and almost snap the wrist of people not paying a 100% attention lmao lol !!! the trick ? , just like you an experienced driller executes , slow !!! , go very slow !!! lol because there is a hole to begin with , especially with temperamental plastics , i would use rotary rasp or deburring bits , i love these , makes for some really smooth and precise holes . they come in all shapes in sizes , i particular prefer the ones shaped like step drills , and the carbide ones usually used for metal as the cutting surfaces are more like rasps or files , the ones for wood are more pronounced !!! but sadly , we have all experienced times where we just cant find the right tool for the job lol , so like you and i being bonafide masters of improvise , lol , we carefully use whatever we need to get the job done . i personally in the mastery of less lethal modding have yet to use or install the zram valve extension tube because i strictly try to keep the launchers easy to carry and use only 12 gram co2 , so power is limited as also volume of contents ! . many years ago i made extensions for various air powered weapons but were maybe half that length of the zrams . i really think the length used are really great when paired with HPA !!! but again , i would keep this for a home defense carbine or bullpup or rifle , for open carry , maybe get out your ol tap and dye ,get you some aluminum or steel pipe in the proper size and hand make you a 1/4 to maybe 1/2 inch extension ? i must confess , the umarex hdr.50 was never one of my most favorite umarex LTL launchers , i prefer modding the HDP>50 and the HDR>68 , these two can be run full open with no co2 restriction ! ... i still today after over 2 years have never really devote myself to see why the hdr.50 farts out all co2 after the first shot !!! did you ever figure it out ????? LOL i figured out decades ago there is just so much power you can develop from co2 or air powered weapons , i think the secret lies in special ammo and exhaust restrictions and forced and shaped concentrations !!! i have a ton of drawings and designs and notes on LTL modifications still hidden from the greedy self centered public , looks like so many of my ideas came to light from me commenting on different people's youtube channels things like special ammo using sabots to take up space using smaller caliber projectiles, cododo ? and few others , extended mag cylinders ,mercury rise ? , extended valve tubes ,zram ? , how about the going from 8 gram co2 to using 12 gram co2 by just adding a special hollowed out bolt or "compensator " sound familiar, byrna ? LOL i feel i have contributed to the LTL world enough only to have other greedy people and companies profit over my creative ideas , its time i get a little credit and money ALSO !!! I often imagined some employee of a company that works for particular companies that searches all the less lethal channels and groups for ideas and innovations only to bring to their superiors and create and manufacture new ideas and start profiting over them guaranteeing the employee a raise and possibly a promotion LOL lmao !!! what the companies really need is some people like us that solve problems and make new parts that enhance and work better , yata,yata,yata, not the spineless retards who reads other peoples post in hopes to steal new concepts and ideas from just reading thousands of other peoples comments !!! them days are gone from me , i no longer give them the opportunity to do this !!! hey companies , why dont you hire people like us ,a few of us , instead of relying on people that search comments for ideas , in the long run , it will be a hell of a lot better , money well spent !!!! i do have a lot of improvements , ammo ideas , power modifications in thoughts and notes ,but seeing whats going on the last few years , its only a matter of time that our government steps in to change all that , you know USA is about the only country left that didnt impose all these stupid restriction like all the other countries have done , isnt the limit for Canada 12 foot pounds ? LESS LETHAL should be kept more to less lethal , anything over 50 joules is too much i feel , when we turn our air powered weapons into producing real firearm pressures , in reality they become firearms themselves right ? food for thought , can you imagine , you , i , jeff , dan , dk , rune and possibly a few more in our own lab and warehouse , the things we could do would revolutionize this industry !!! GREAT SHOW MY BROTHER , YOU TRULY NEVER DISAPPOINT !!!

Nice testing there, brother💥💥💥

Awesome handgun mod, awesome job

Those were great results. Nice test!!!

Nice power 👍🏻🇨🇾

Nice,nice was that an 11joule to start with? I'm getting better results without that tuning barrel extension as well. I think certain projectiles drag a bit but I'm not sure exactly yet. Smooth Zram install My boi! 🤟😎👍💥

I just end up ordering Zram and a magazine already got tunning barrel so let's see if this mod works as well

If you didn't drill out the ammo carryer, mag, how did you get 12.7mm to fit...

is that ZRam ZExtension give more velocity how much more fps additional from the original stock fps and where did you get it

Hi Sean quick question I have a hdp 50 that shoots and doesn't fart with restrictor,but I had another one that no restrictor and didn't fart do you know why ??

Great vid. Would this fit with tr4e carbine kit installed?

If I was you I would move those drill batteries away from the window away from direct sunlight. Battery's and sunlight don't like eachother to mutch

Nice Job , I'm being lazy same principle for the 68 ? Hey Bro is that beard getting Grayer LOL🤔

Whats your top 5 conceal edc pick... I got the byrna LE coming in and I can say it might get lonely and need someone to talk to

So the extension in the rear allows for more CO2 to be stored before pulling the trigger, and thus increasing projectile speed? Is that how it works?