M855A1 through factory KAC SR-15, issues?

TheHorta · Dec 13, 2024

Hoping maybe our resident KAC stud @Jack_L can answer.

I assume there are zero issues, but figure I’d axe anyway…

Any issues running 855A1 through a factory SR-15? (Both CQB and Carbine uppers), with 5.56 QDC. Also running Sandcutters, not that it likely makes any difference.

One of the guns:

More for wrmfzys than anything. Will probably put 2-3K of A1 through the above gun over the course of a week.

1911hombre · Dec 13, 2024

M855A1 is for poors.

TheHorta · Dec 13, 2024

1911hombre said:
M855A1 is for poors.

All my KACs jam with MK211 or SLAP. I don’t know why.

B y r o n · Dec 14, 2024

Maybe this information will help you decide.

Mike278th · Dec 14, 2024

If you're running the A1s, you'll want to run the redesigned mags that move the bullet tip up further so the exposed steel tip won't erode the barrel extension. Really only necessary if you run a bunch of them, though.

MarshallDodge · Dec 14, 2024

Nice brag thread

The SR-15 is undergassed in my experience so I don't see it being an issue.

1911hombre · Dec 14, 2024

MarshallDodge said:
The SR-15 is perfectly gassed, both unsuppressed and also when suppressed by KAC PRT suppressors in my experience.

FIFY.

kthomas · Dec 14, 2024

MarshallDodge said:
Nice brag thread

The SR-15 is undergassed in my experience so I don't see it being an issue.

Undergassed?

TheOE800 · Dec 14, 2024

There are no undergassed AR15 carbines in mass production.

MarshallDodge · Dec 14, 2024

TheOE800 said:
There are no undergassed AR15 carbines in mass production.

Then why won't mine on cheap ammo? It likes loads on the warmer side and 5.56.

TheOE800 · Dec 14, 2024

MarshallDodge said:
Then why won't mine on cheap ammo? It likes loads on the warmer side and 5.56.

Low power commercial bulk ammo isn’t made to spec. The spec is military 5.56mm NATO.

DeathBeforeDismount · Dec 14, 2024

MarshallDodge said:
Then why won't mine on cheap ammo? It likes loads on the warmer side and 5.56.

Because they aren't designed for shit ammo and are designed to be optionally suppressed. They are gassed correctly. Most ARs are massively over gassed to make up for shitty machining, not made to spec and weak ammo.

Ironically all my sr15s run tula and cheap shit without issue. When I hear people say they won't run I assume they are idiots and don't know basic ar maintenance and how to keep them running....lots of lube and replacing springs as they wear. I have a mod 0 that is a dedicated training gun with probably 5000 rounds of wolf and tula without cleaning and it still runs like a sewing machine. Just keep her lubed and send it.

MarshallDodge · Dec 14, 2024

DeathBeforeDismount said:
Because they aren't designed for shit ammo and are designed to be optionally suppressed. They are gassed correctly. Most ARs are massively over gassed to make up for shitty machining, not made to spec and weak ammo.

Ironically all my sr15s run tula and cheap shit without issue. When I hear people say they won't run I assume they are idiots and don't know basic ar maintenance and how to keep them running....lots of lube and replacing springs as they wear. I have a mod 0 that is a dedicated training gun with probably 5000 rounds of wolf and tula without cleaning and it still runs like a sewing machine. Just keep her lubed and send it.

I know how to maintain an AR, and don't really care if it won't run shitty ammo. Everything I run through it are my reloads. My son brought some steel cased ammo to the range and tried it without success. Oh well.

MarshallDodge · Dec 14, 2024

TheOE800 said:
There are no undergassed AR15 carbines in mass production.

I don't say undergassed in a bad way, and maybe should have used a different term. Take a Colt 6920 and compare it to an SR-15. The 6920 has to have a heavy buffer and special extractor springs with a buffer to run properly.

DeathBeforeDismount · Dec 14, 2024

MarshallDodge said:
I don't say undergassed in a bad way, and maybe should have used a different term. Take a Colt 6920 and compare it to an SR-15. The 6920 has to have a heavy buffer and special extractor springs with a buffer to run properly.

Because retards who dont know basic AR maintenance and will run the cheapest shittiest under powered ammo (or reloads) and then complain and trash the company for making an unreliable gun. They are that way to cater to the lowest common denominator, not because that is the optimal way to build a fighting gun.

DeathBeforeDismount · Dec 14, 2024

MarshallDodge said:
I know how to maintain an AR, and don't really care if it won't run shitty ammo. Everything I run through it are my reloads. My son brought some steel cased ammo to the range and tried it without success. Oh well.

Steel case ammo is under powered shit. I know, I shoot a ton of it in training. Yet my KAC guns still run it. Weird.......

pmclaine · Dec 14, 2024

You will get AIDS from that combination.

SIDA if you are in Europe and don’t already have it.

TheHorta · Dec 14, 2024

I’ve put a few mags of A1 through them with no issues. I have a bunch of issue EP mags with the blue followers. It’s for a MIL session, so they’re providing all ammo, which is A1. I’d prefer to use my own gun, which they’re cool with. If 3K rounds of A1 is going to chew it up, I’ll take a crappy LMT or DD instead.

M855A1 through factory KAC SR-15, issues?

Nest-stirring pot-poker.

Old School

Nest-stirring pot-poker.

Private

Private

At the Reloading Bench

Old School

Sergeant

Argumentative

At the Reloading Bench

Argumentative

Hey, give your balls a tug.

At the Reloading Bench

At the Reloading Bench

Hey, give your balls a tug.

Hey, give your balls a tug.

Gunny Sergeant

Nest-stirring pot-poker.

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