usmc1974 Posted April 25, 2022 Share Posted April 25, 2022 I am new to the JP GMR15 and JP rifles. So I have to ask a question, how often do you Replace the little rubber washers on the recoil system? I took it out and shot it, yesterday about maybe 200, and I noticed when I went to clean it, there was rattle. I when I took it apart all the little rubber washers was chewed into little pieces, gone all but 2 and retaining pin came off. Link to comment Share on other sites More sharing options...
Boomstick303 Posted April 25, 2022 Share Posted April 25, 2022 I try to change them out annually, but I do keep an eye on them. They typically become pretty smashed before they disintegrate. If they are flat I will switch them out before there is an issue if I am not up to the maintenance interval. I check them every time I clean the rifle and try to keep as much oil off them as possible. Most oils and rubbers do not like to play well together. Was the rifle bought used, is it new? Link to comment Share on other sites More sharing options...
usmc1974 Posted April 25, 2022 Author Share Posted April 25, 2022 (edited) 2 hours ago, Boomstick303 said: I try to change them out annually, but I do keep an eye on them. They typically become pretty smashed before they disintegrate. If they are flat I will switch them out before there is an issue if I am not up to the maintenance interval. I check them every time I clean the rifle and try to keep as much oil off them as possible. Most oils and rubbers do not like to play well together. Was the rifle bought used, is it new? Got it used off BEF I want to Menards and brought the last 10 they had. lol Thanks Edited April 25, 2022 by usmc1974 Link to comment Share on other sites More sharing options...
Tampa-XD45 Posted April 26, 2022 Share Posted April 26, 2022 18 hours ago, usmc1974 said: Got it used off BEF I want to Menards and brought the last 10 they had. lol Thanks Check out the JP videos on this page: https://www.jprifles.com/buy.php?item=JPSCS2-ORING-PK Link to comment Share on other sites More sharing options...
usmc1974 Posted April 26, 2022 Author Share Posted April 26, 2022 3 hours ago, Tampa-XD45 said: Check out the JP videos on this page: https://www.jprifles.com/buy.php?item=JPSCS2-ORING-PK it is a great little carbine, love shooting it. Now that all the new o rings are in place it feels better just pulling the charging handle back very smooth. Link to comment Share on other sites More sharing options...
Cowguy Posted June 26, 2022 Share Posted June 26, 2022 How do you find these at Menards? Link to comment Share on other sites More sharing options...
brian45acp Posted July 10, 2022 Share Posted July 10, 2022 Once you find the correct combo of stainless and tungsten weights the O rings will last nearly forever. at first I would see then flattened or chewed up. Now that I have the correct combo of weights my O rings have no wear after 2 years of weekly match use. Link to comment Share on other sites More sharing options...
usmc1974 Posted October 7, 2022 Author Share Posted October 7, 2022 (edited) I got this rifle off of BEF about a year ago, from A member he said it was in good repair. but it was not, I sent it to JP They said that it was pretty much destroyed But they rebuilt, The top end Completely Replacing the upper receiver and the magazine release among other things. But they did not check the recoil Spring and buffer system. Come to find out someone had stuck a big oversized spring retainer that would not stay in place and kept letting the weights slide all the way to the back. I ordered The correct O rings and retainer and now it works perfect. But Now I'm also very Leary about buying anything else off of BEF Edited October 7, 2022 by usmc1974 Link to comment Share on other sites More sharing options...
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