aaron2310 Posted May 2, 2009 Report Share Posted May 2, 2009 Bare with me as I've never actually done anything to my guns yet but I want to install a new barrel in my P90. From what I understand I need to take the hop-unit apart to install the barrel but I can't see to find any screws or such on the hop unit. It's a TM TR one. Totally stock. Any help? Thanks Link to post Share on other sites
beretta Posted May 2, 2009 Report Share Posted May 2, 2009 Its pretty easy on a P90. theres a button underneath the magazine and if you press this the whole front RIS will come away. if you press the hopup in a little it will rotate and come straight out from the RIS front end along with the barrel. Make sure the hopup setting in in the off position. theres a small clip on the hopup mech and once this is removed you can carefully pull the barrel out of the hopup mech. you'll see the hopup sleeve on the old barrel when it comes out. transfer this over onto the new barrel and the rest is the revers of removal. Link to post Share on other sites
aaron2310 Posted May 2, 2009 Author Report Share Posted May 2, 2009 Is right or left off? Just wanna make sure. Link to post Share on other sites
stewpidbear Posted May 2, 2009 Report Share Posted May 2, 2009 As you rotate it look and you will see the lugs come into sight through the housing. As long as your careful nothing should break. Just rotate the assembly until the lugs line up and it should come free. Link to post Share on other sites
aaron2310 Posted May 2, 2009 Author Report Share Posted May 2, 2009 Sorry, I meant to turn the hop off. Link to post Share on other sites
beretta Posted May 2, 2009 Report Share Posted May 2, 2009 turn it all the way to the left of the gun, sure when you have the barrel out you can do it and you'll be able to see down the barrel to see if its on or off. Link to post Share on other sites
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