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Rock River Arms LAR-15M 458 SOCOM 842834101306

Rock River Arms LAR-15M 458 SOCOM 842834101306

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Rock River Arms LAR-15M 458 SOCOM 842834101306

UPC
842834101306: MPN
SOC0820V1: Brand
Rock River Arms: Main Model
Rock River Arms LAR-15M Upper: Model
LAR-15M: Caliber
458 SOCOM: Type
Complete Upper: Receiver
Black, Aluminum: Muzzle
RRA Beast Brake: Barrel Length
16"

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Recent comments

Burris Co FastFire E Green-Dot Reflex Sight 1x 3.5 MOA - $169.99 + Free Shipping

How big is this chunky boy in comparison to a Holosun 407? It looks like a proper mailbox

43 min 3 sec ago Byzyang
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

Does not work fir any size or color

44 min 9 sec ago Bybello1077
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

Works for the 36" FDE and 42" FDE, but not the 46" in any color.

51 min 11 sec ago Bysjlplat
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.

1 hour 36 min 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

3 hours 8 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

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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

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5 hours 52 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

6 hours 8 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/...

6 hours 4 min ago ByUndivided
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6 hours 32 min ago Bydxdevoe