sandrooney Posted October 25, 2017 Share Posted October 25, 2017 Shot 125 rds through mine yesterday. It ran flawlessly. I agree with the safety being stiff. I am a Master in open but have not had much experience with rifles. It's a lot of fun, but I can see it will take some practice. Mostly with maneuvering the gun safely. Link to comment
MHitchcock Posted October 25, 2017 Share Posted October 25, 2017 2 minutes ago, sandrooney said: Shot 125 rds through mine yesterday. It ran flawlessly. I agree with the safety being stiff. I am a Master in open but have not had much experience with rifles. It's a lot of fun, but I can see it will take some practice. Mostly with maneuvering the gun safely. Yeah, it definitely takes a bit to get used to. Depending on your local stage designers, you may have some unique challenges. We always have a few stages set up around "lets make this part really hard for PCC" like weak side leans around close barriers, close ports with narrow shooting boxes, and shots that are impossible to make strong shouldered. It is a blast though Link to comment
Meister Posted October 28, 2017 Share Posted October 28, 2017 Have a couple of other 9mm builds but when it really counts I always opt for my GMR 13. Never a failure no matter what I feed it. Oh, and the select fire works its way easier with use. Link to comment
Part_time_redneck Posted October 28, 2017 Share Posted October 28, 2017 Several months ago I bought a 15 and love it. It's like the little energizer bunny: keeps going and going and going. All stock except for buffer. Last week I followed Eric's advice and went with 1 tungsten, 3 steel & the black spring from the 5 pack. All the difference in the world. Overall very happy with it. Link to comment
sandrooney Posted October 28, 2017 Share Posted October 28, 2017 Where did you get the 5 pack ? Thanks Link to comment
L9X25 Posted October 28, 2017 Share Posted October 28, 2017 (edited) JP sells 2 springs packs, one includes 5 springs from 80% to 100% in 5% increments. The 3 spring pack has 100%, 105% & 110% Stock is 110% for a GMR with SCS. Edited October 28, 2017 by L9X25 Link to comment
L9X25 Posted October 28, 2017 Share Posted October 28, 2017 2 hours ago, Part_time_redneck said: Last week I followed Eric's advice and went with 1 tungsten, 3 steel & the black spring from the 5 pack. All the difference in the world. That is a pretty aggressive setting, super light buffer with an 85% spring is near the edge. That is likely optimized for ~130pf loads along with a Smalley or similar system to soften the bump. I was running 4 Tungsten with the 90% spring, although that was with factory WWB 115. Dropping to the 85% spring resulted in a noticeable bump at the end of the buffer travel. YMMV Link to comment
Part_time_redneck Posted October 28, 2017 Share Posted October 28, 2017 58 minutes ago, L9X25 said: That is a pretty aggressive setting, super light buffer with an 85% spring is near the edge. That is likely optimized for ~130pf loads along with a Smalley or similar system to soften the bump. I was running 4 Tungsten with the 90% spring, although that was with factory WWB 115. Dropping to the 85% spring resulted in a noticeable bump at the end of the buffer travel. YMMV Your correct. Sorry but I didn't specify. Just running the carbine in steel challenge now. Very light loads @ -120 PF. I'm sure I will have to change when I shoot USPSA with it and up the PF. I generally try try to be a little more comprehensive in my post but when I wrote that the coffee hadn't kicked in yet. Link to comment
Aircooled6racer Posted October 28, 2017 Share Posted October 28, 2017 Hello: I am running the 1 tungsten, 3 steel weights with either a black or green spring and 131-138PF loads. No Smalley spring since I don't like the feel of it. I have shot over 5000 rounds with this setup using 115-147grain bullets and Tite Group mostly. It will run 100PF loads as well since I tried some old 115 grain reloads I had for my sons when they were 7-8 years old. If you are running factory loads I would try 2 tungsten and 2 steel weights with the black spring. The springs are all within 5 lbs of each other and are about 1 pound apart from each other. A stock 223 spring is about 13 pounds. Thanks, Eric Link to comment
L9X25 Posted October 28, 2017 Share Posted October 28, 2017 1 hour ago, Part_time_redneck said: Your correct. Sorry but I didn't specify. Just running the carbine in steel challenge now. Very light loads @ -120 PF. I'm sure I will have to change when I shoot USPSA with it and up the PF. I just wanted to make sure that you did not run any high-powered loads through that without testing. We all know that Eric runs with scissors, plays in traffic and shoots guns for fun ... not exactly the kind of guy we want around our children! ;-) Link to comment
Aircooled6racer Posted October 28, 2017 Share Posted October 28, 2017 1 hour ago, L9X25 said: I just wanted to make sure that you did not run any high-powered loads through that without testing. We all know that Eric runs with scissors, plays in traffic and shoots guns for fun ... not exactly the kind of guy we want around our children! ;-) Hello: Yes I do and I like it! Thanks, Eric Link to comment
Part_time_redneck Posted October 29, 2017 Share Posted October 29, 2017 17 hours ago, L9X25 said: I just wanted to make sure that you did not run any high-powered loads through that without testing. We all know that Eric runs with scissors, plays in traffic and shoots guns for fun ... not exactly the kind of guy we want around our children! ;-) Eric's not that bad. Speaking of children, years ago I learned to walk behind a push mower. Link to comment
L9X25 Posted October 29, 2017 Share Posted October 29, 2017 2 hours ago, Part_time_redneck said: Eric's not that bad. Speaking of children, years ago I learned to walk behind a push mower. Today that would be considered child endangerment! Link to comment
Aircooled6racer Posted October 29, 2017 Share Posted October 29, 2017 Hello: I was riding my skateboard that I built when I was 13 years old. My sons thought I was crazy but I was faster than them. Sometimes you just have to live on the edge. I smoke cigars and drink whiskies also. Thanks, Eric Link to comment
cssjcombs Posted March 4, 2019 Share Posted March 4, 2019 I have a GMR 15 lower that I got to build out but can’t seem to find any parts online. Tons of complete guns but no JP build kits, complete uppers or barrels. I was thinking of making a pistol w a 10.5” barrel but hadn’t considered how hard it would be to find stuff. Any recommendations? Link to comment
TNREDNECK Posted March 5, 2019 Share Posted March 5, 2019 Buy the JP direct from them for $1600 why pay more then you have to through a middle man, also someone said the 15 had a billet upper that’s not the case unless you buy the top of the line with the side charge. They are great guns mine has been flawless! Link to comment
ABQautoxer Posted March 5, 2019 Share Posted March 5, 2019 (edited) 22 hours ago, cssjcombs said: I have a GMR 15 lower that I got to build out but can’t seem to find any parts online. Tons of complete guns but no JP build kits, complete uppers or barrels. I was thinking of making a pistol w a 10.5” barrel but hadn’t considered how hard it would be to find stuff. Any recommendations? JP sells complete uppers, you just have to run their builder: https://www.jprifles.com/rosmain.php?assembly_id=67 Barrels and everything else are on other sections for their site. I'm a huge fan of mine. We had an issue where the FM9 didn't want to run the 150gr Federal Syntech this weekend for my GF and I forgot to pack normal stuff so we shared the short stroked GMR15 all day. Guess what I've put in my shopping cart a couple times today. Edited March 5, 2019 by ABQautoxer Link to comment
ABQautoxer Posted March 6, 2019 Share Posted March 6, 2019 And it's done. Sold my FM9 to a friend who will just use it for fun and ordered another JP GMR15. I kept considering other options but in the end all I would do is hope they are as reliable and flexible as the JP. Link to comment
pjb45 Posted March 9, 2019 Share Posted March 9, 2019 I shot the JP SW Regional match recently. The biggest issue faced by the shooters was reliability. A non-statistical assessment by me was the JPs ran consistently without reliability issues. It seem like someone had an issue on a stage or two with other equipment. Just an observation not a fact. Link to comment
TNREDNECK Posted March 10, 2019 Share Posted March 10, 2019 JP sells more PCC then then anyone else for a reason they run, and there accurate and they back all up with customer service , which in today’s world is rare . Link to comment
TNREDNECK Posted March 10, 2019 Share Posted March 10, 2019 On 3/3/2019 at 10:25 PM, cssjcombs said: I have a GMR 15 lower that I got to build out but can’t seem to find any parts online. Tons of complete guns but no JP build kits, complete uppers or barrels. I was thinking of making a pistol w a 10.5” barrel but hadn’t considered how hard it would be to find stuff. Any recommendations? Strong side tactical is JP master dealer and great to do business with ! Link to comment
caz41 Posted March 10, 2019 Share Posted March 10, 2019 PM me if you need a JP discount code Link to comment
floPnik Posted March 10, 2019 Share Posted March 10, 2019 How much of a discount we talking? Link to comment
ABQautoxer Posted March 12, 2019 Share Posted March 12, 2019 On 3/10/2019 at 4:15 PM, floPnik said: How much of a discount we talking? It's definitely worth the PM. Link to comment
tha1000 Posted March 12, 2019 Share Posted March 12, 2019 On 3/3/2019 at 10:25 PM, cssjcombs said: I have a GMR 15 lower that I got to build out but can’t seem to find any parts online. Tons of complete guns but no JP build kits, complete uppers or barrels. I was thinking of making a pistol w a 10.5” barrel but hadn’t considered how hard it would be to find stuff. Any recommendations? JP has had a 10.5" complete upper for sale for a while now under the "available now" section of their website. Give me some time to do some testing and I might have a factory built gmr-15 upper to part with. Link to comment
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