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Posts posted by ffgats

  1. Hi, Now shooting open with Typhoon F12 and it comes with after market muzzle brake... my Buckshot seems will not pattern as tight as I want, tried different chokes from LM, Mod and IM ... SB , Remington and Federal ammo were also used. 

    Does a brake affect how a gun patterns? Will try shooting without  the brake and see what happens... any feedback will be appreciated. Thanks 

  2. The firing pin and the extractor are  issue, you can’t simply mail the part up here,  will make more research on other companies that are legal to export, emailed Brownells if the start stocking these parts, btw are the firing pin and extractor proprietary, it looks like the extractor is the same as 1911, and the firing pin as standard AR 223, might be wrong though 

  3. I want to keep in hand some spare parts, ( firing pin,,extractor snd oring)  JP doesn’t ship to Canada, although Brownells carry JP parts snd ship, but they don’t have the parts mentioned above,  any recommendation of other source, thanks 

  4. lots of 10 rounders here, but remembered JP recommends the standard 17 rounds  for reliability, more something like the different follower design of the 10 rounds. although the 17 rounds are prohibited here unless pinned to 10 which is legal. and find the 10 rounders is a pain to load on close bolt.

  5. 1 hour ago, CTRFLDR said:

    Looking to put the 510C on a JP GMR 15 - trying to determine if I automatically need a riser or shoot it first to see. I’ve only shot a friends MPX and he had a large riser under the Romeo 5S.  If I need a riser who is recommended (FDE)?  Thanks for any insight. 

    Also shooting GMR15 with 510C, i find the factory height a little low , Was able to get a spacer (.200) to raise the 510C to 1.61”, which is an  improvement . Always shoot with my Red Dot  to 1.70”. . Holosun sells the spacer. But have to source mine here locally since Holosun doesnt ship up North.

  6. Jp GMR 15 14.5”bbl

    3.8grs is at 128pf

    4.1 at 140pf

    3.8 is soft Shooting but are getting some flyers at 25 yards, 4.1 is still soft/ flat and shoots great at 25.

  7. On 3/1/2019 at 3:11 PM, BiggMike said:

    Correction. I cleaned and checked my 1050; reconfigured my loading data and then rechecked my N320 loading. I am switching back to N320 because now my drops and loads are dead on. My deviation is +/- .1 on the drops. So now my current PCC load is 4.2gr N320 @ 1.130; this gives me about 135-140 PF in my GMR-15.


    do you mind sharing your N320 load for your GMR15, I did try 3.8 and it was a soft shooting load but the accuracy was not satisfactory, then bump my load to 4.1 gr and accuracy is now great. btw I'm using Frontier Match 124 gr. 1.125" OAL,  thanks

  8. Hi

    I have both the Gen2 SCS for AR15 223 rifle and GMR15 9mm PCC , are both using the same spring , meaning can I purchase the 5 pak and use it either the 9mm and 223? I want to use at least 10-15% lighter to both my 223 and 9mm. Need some clarification and advise on this, btw can anybody point the spring weight from factory to both 223 and 9. Thanks 

    did email JP but haven’t heard for a week now

  9. Instead of creating another thread might as well ask it here. I find the trigger not bad, but I prefer the Geissele SD-E of my 223. Wondering if it’s compatible with the GMR15. ( ask JP but haven’t got an answer, been a week already) Btw the 10 rounds and the 17 pinned to 10 is a challenge to load on close bolt, not sure if it will improve after some use.

  10. Just received my GMR15 and while reading the manual it states that the 10rounder is not recommended because of the design of the follower, I didn’t realized that the high cap( prohibited here up north) doesn’t share the same follower? Thanks 

  11. Yeah, was about to edit my post, my load right now is 3.8gr of N320 and 124 Frontier RN, oal 1.140, at first I replaced the factory recoil spring15lbs  to 10 lbs hoping to cure the problem. But this load work perfectly with my older Shadow2 non OR

  12. Occasionally im getting this failure to feed, (nose up) ammo, a couple of questions, could it be the extractor - too loose or tight, feed ramp needs polishing  or mags (lips and spring ) basically bnib gun less than 300 rnds, this happen 2-3 times per 100 rnds, haven’t mark which mag is doing it,  give your thoughts , thanks

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