Had a JP GMR 15 and switched to a MPX. Totally reliable. I add a Hiperfire Eclipse, magwell, Odin mag releases. Couldn’t pay me to spend more for less. JMO.
i was thinking about shooting a USPSA match Sunday morning. Could we meet at 12:30 at Crispy Cream locates off of 44 and Bowles Ave. This exit is before you get to 270?
Normal hygiene and an MPX runs as reliably as anything else. Some shooters seem prone to reliability issues whether it’s a 1911 , open gun or MPX. My gen 2 hs been faultless.
Bring 9 mm to the level of a well tune gas gun validates the MPX design. Of course the MPX is fully ambidextrous and has a user friendly mag release. Odin make a wonderful left and right extended mag release.
I don’t shoot the JP but it has a reputation for reliability. If it shot fine why would you introduce new variables as you troubleshoot. This seems to be a very risky road. I suggest shooting the gun in the same configuration that ran reliably for years as you do maintenance items. JMO
Luckily my Gen 2 has been perfect. I use a Hiperfire Eclipse and Isler handguard. Odin safeties and Raptor charging Hanley. These upgraded parts do not affect reliability. The JP owners I know have also upgraded their guns substantially. The competition is between you and the clock. I think MPX gives me my best chance to succeed.