7.5 inch AR-15 reliability

[scottryan]

Scott. I know you have a better argument than that.

(I'm not calling you out with this next comment.)

Why do you say he didn't convince them of anything?

(I wouldn't say one way or another.)

None of those instructors use such a weapon as their primary go to gun. I bet most of them don't even own a 7.5" gun in 5.56.

Using a gun like this in training is fooling yourself. It has too much muzzle blast and not enough lethality. The quickness of handling of this short gun is not reality.

You need a regular length SBR for real world use to kill someone in the real world.

Short 7.5" guns are used for a break contact weapon. They are made to spray as much bullets into the bad guy or vehicle the bad guy is in and get away, then the shooter switches to a real SBR.

[Iraqgunz]

My two cents on the issue. When I was in Iraq a few guys had DPMS 7.5" guns and they didn't always run so good.

The dwell time and cycle of operation is violent and brutal. Some of them may run good, but I just don't see the real value in it. I would much rather have an additional 3 inches of barrel that will give me more reliability and better ballistics. Not to mention most all suppressor manufacturers will not warranty their cans on 7.5" barrels.

[RyanB]

I would like to see 5.56mm MARS or 6x35 TSWG in 8 inch barrels made readily available.

[Polymerhead]

We can't take you serously when you are running a YHM rail, Model 1 upper, and some off brand silencer.

I thought this post was in jest, but I guess not.

"How can we take you seriously? You're wearing last year's Gucci boots!"

[Sry0fcr]

None of those instructors use such a weapon as their primary go to gun. I bet most of them don't even own a 7.5" gun in 5.56.

Using a gun like this in training is fooling yourself. It has too much muzzle blast and not enough lethality. The quickness of handling of this short gun is not reality.

You need a regular length SBR for real world use to kill someone in the real world.

Short 7.5" guns are used for a break contact weapon. They are made to spray as much bullets into the bad guy or vehicle the bad guy is in and get away, then the shooter switches to a real SBR.

It's a niche weapon system to be sure within that niche 3" less of OAL might be worth the tradeoff in the cramped confines of a vehicle or for the ability to stuff it under a coat. Not everyone is an infantryman or security contractor in some 3rd world shithole expecting to get ambushed by dudes with RPGs and AKs. From what admittedly little ballistic testing data I've seen the right 5.56 load (not ****ing FMJ) should still do the job within typical SD or LE distances (i.e. within 50yds). No it's not optimal, but optimal is a moving target depending on what you're doing. Mission drives the gear right?

Also, you can get your point across without being combative and condescending but if you're going to do it anyway at the very least let the rest of us in on your resume & extensive real world experience so we can put your [obviously strong] opinion into a frame of reference.

[shadow65]

My two cents on the issue. When I was in Iraq a few guys had DPMS 7.5" guns and they didn't always run so good.

The dwell time and cycle of operation is violent and brutal. Some of them may run good, but I just don't see the real value in it. I would much rather have an additional 3 inches of barrel that will give me more reliability and better ballistics. Not to mention most all suppressor manufacturers will not warranty their cans on 7.5" barrels.

And there you go.

[Dave_M]

And there you go.

...is M1S any better?!?


Never heard that one before...

[GTF425]

You need a regular length SBR for real world use to kill someone in the real world.

Please post your credentials. No carbine classes or tacticool mumbo jumbo; I want to know the last time you killed someone with real world super scary gun bullets. Otherwise, knock the "killing people" shit off.

PS- Show me a shooter on a PSD or entry team who carries a "break contact SBR" and a "real SBR" while on the job. That made my night.

[S-1]

None of those instructors use such a weapon as their primary go to gun. I bet most of them don't even own a 7.5" gun in 5.56.

Using a gun like this in training is fooling yourself. It has too much muzzle blast and not enough lethality. The quickness of handling of this short gun is not reality.

You need a regular length SBR for real world use to kill someone in the real world.

Short 7.5" guns are used for a break contact weapon. They are made to spray as much bullets into the bad guy or vehicle the bad guy is in and get away, then the shooter switches to a real SBR.

[shadow65]

...is M1S any better?!?


Never heard that one before...

I don't know. Never tried a Model 1. But I have used a DPMS Kitty Kat and had issues with cycling reliably. I had the gas port opened up, ran a BCM BCG and a 9mm buffer to get it running. Then with the gas port opened up, it would get dirty quickly.

My Ranier build has run from the first shot. It has never balked on anything I've put through it. It also has a relatively small gas port and doesn't get dirty as quick.
1/8 twist allows me to use a wider variety of ammo and has decent accuracy at 100 yards.
I've run it suppressed and unsuppressed.
Dave