Shadow Systems XR920 HGA 9mm 810120310206

Remington 23728 UMC Full Metal Jacket FMJ 115 Grain 9mm Luger/Parabellum - 1000 Rd - $199.99

Sorry. My error. In my senility I overlooked your "lightweight" spring use. Those springs would certainly throw some codes and cause all sorts of experimentation. I'm still curious why the 124 Rem fails when the factory specs list identical velocities. Maybe the test barrel was longer. I'll have to chrono some. I have probably 15-20 9mm's on the rack, mostly alloy Sig and Beretta, some CZ and HK, Glock, S&W, FNH, etc., in hammer, striker and external extractor 1911 designs, use only duty weight springs, no subs or suppressors, no steel case, and don't shoot them as much anymore. They tend to be boringly reliable with major brands and reloads, with accuracy as the only variable. The Blazer was the only brand causing problems, and that out of a stiff M17. Oh, and a S&W SD9 which was such a POS that it became a test dummy.

45 min 35 sec ago Bynotsecretservice
Federal Champion BYOB Rimfire Ammunition 22 LR 36 gr. CPHP 1260 fps 1375/ct - $85.49 after code: DG5

Shipping is too high

2 hours 17 min ago ByJoshwilk18
34% off 1600 Lumens Rifle Light Laser IR 3-in-1 Combo, Ar Light Laser Combo Magnetic Rechargeable with Remote Switch, Aluminum Flashlight for Rifle Compatible with Picatinny and M-Rail w/code VS2PZ2KD

Code does not give 34 percent off

3 hours 16 min ago ByDonavonK
ZEROHAWK EM1 Enclosed Red Dot Sight with MOS/RMR to RMSc Adapter Plate, 2 & 32 MOA Multi Reticle System Micro Reflex Sight for Pistol, RMSc/K Footprint Compatible, Parallax-Free Sight (Black) - $149.99

Knock off osight? Idk why someone would buy this when those exist and Olight has the best warranty in the business.

5 hours 1 min ago Bybaseballplerrr
Federal Champion BYOB Rimfire Ammunition 22 LR 36 gr. CPHP 1260 fps 1375/ct - $85.49 after code: DG5

Not a good deals. Free shipping over 99$ and it doesn’t even work. Plus there is tax. Came out to 215$ lol. What a joke

5 hours 16 min ago ByThegooseman
Remington 23728 UMC Full Metal Jacket FMJ 115 Grain 9mm Luger/Parabellum - 1000 Rd - $199.99

I can get it to run in a cz. Not in any striker fired pistol with their more radical cam. As you go to lower spring weight in striker fired other problems are introduced. I've tried. I've got 5 k of it.

With the 19 with factory spring it has failures to feed. Slide does not go fully to rear. With a 16 lb spring failures to go into battery. Say every fifth round.

If you go lighter in recoil springs with a Glock you have to lighten firing pin spring...not really wanting to go further down rabbit hole. I just wanted some range ammo not to respring my guns.

PSA micro is more or less same. Bought lighter springs for it too trying to get it to run.

Same guns run like sewing machines with Speer lawman or S&B.
Here is one discussion about UMC low power factor.
I was surprised used many UMC components over the years and they were fine. Still use many rem components.
I haven't chronoed it don't really care. Does not run in my primarie

Gonna take it gun show and dump it.

Care to share the firearms it runs in for you?

https://www.glock.pro/threads/remington-umc-9mm-luger-mega-pack-good-or-bad.1425/...

5 hours 12 min ago ByUndivided
50% off CVLIFE Soft Rifle Case Double Long Gun Bag,with Lockable Zipper and Backpack Strap,Rifle Backpack Rifle Bag Gun Case for Outdoor Hunting Shooting Range w/code FTWQOHKM - $33

Code doesn't work

5 hours 41 min ago Bydxdevoe
Heckler & Koch VP9B 9mm NS 17RD Green/Black - $579.99

Out of stock

7 hours 14 min ago Bypyratio
Federal Champion BYOB Rimfire Ammunition 22 LR 36 gr. CPHP 1260 fps 1375/ct - $85.49 after code: DG5

$22.42 shipping to OH

7 hours 30 min ago Bymediamkr
Federal Champion BYOB Rimfire Ammunition 22 LR 36 gr. CPHP 1260 fps 1375/ct - $85.49 after code: DG5

7 hours 31 min ago Bymediamkr