USSOCOM Looking for .300 Blackout PDW

>>33302957
Guess the MCX is kill.

>>33302957
>quick swap barrel?

Da fuq? Why not just do another M4CQBR upper in .300 bo and call it a day?

>>33303014

Ammo availability.

If shit hits the fan and you run out of your snowflake ammo, you want to be able to use the ammo as the SAW/rest of the team.

>Kit should include a 5.56mm barrel that can be changed from .300 BLK to 5.56mm in less than 3 minutes.
Fuckin why? A complete upper swap is way "cleaner" and you dont lose zero. Its already an SBR so its not like you're saving that many ounces by insisting on a QC barrel

>>33303034
see
>>33303030

>>33303042
They are saying a upper swap would be easier and faster than a barrel change.

>>33303030
They are already using the m4 lower. Which means all you need to do is remove two pins to swap an upper.

Opposed to removing rail, gas block and tube, and barrel nut.

Not to mention, your optic will not be properly zeroed if you are just changing a barrel.

Again easier to just carry a .300 bo upper and swap, just like the M4CQBR progr they run with the Sopmod kits.

Also I can't wait till guys start "accidentally" shooting .300 through their 5.56 guns.

I am assuming you dont into ars... or maybe even a noguns.

>>33303056

Would be about the same (if its 3 mins), except just the barrel is far lighter and smaller, thus easier to carry in the pack.

If you want to carry a complete upper with optics, might as well carry a complete rifle at that point.

>>33303030
>If shit hits the fan and you run out of your snowflake ammo, you want to be able to use the ammo as the SAW/rest of the team
>Spending 3 minutes dicking around with Allen keys installing the 5.56 barrel for your .300 memeout PDW
>VS spending 10 seconds pushing out 2 pins and putting a 5.56 upper on
Explain

>>33303089

Right now that is the case with AR's, and would clearly take longer than 3 mins. They are asking for something new, and that does not exist.

>Again easier to just carry a .300 bo upper and swap,

see >>33303092

>Also I can't wait till guys start "accidentally" shooting .300 through their 5.56 guns.

Being as how these are SF, its a far less likely occurrence.

>ur a noguns

No, i just see what they want.

>>33303109
Show me a 3 minute barrel swap on an ar. I'll wait.

I'm assuming you don't spend much time with ars my fuddy friend.

>>33303109
Also you didn't answer the poa/poi for the optic that would change with this miracle barrel swap.

>>33303139

Read the first sentence in my post.

Jesus Christ.

>>33303157

Zero POI shift is not in the tender, so socom clearly does not care about it. Logically, this makes sense as it is clearly intended as a backup.

>>33303139
Based on Chris Bartoccis video on the LMT MARS, its barrel could be changed in under 2 minutes in ideal conditions.

>>33302957
What barrel length would they use? 9"?

>>33303320
That's what blk is optimised for, but who knows. It's not like 5.56mm was originally designed for 14 inch barrels either.

>>33303191
LMT barrel swaps can be done in much less than that. It's just two bolts.

>>33303518
What does replacing a barrel involve? Don't you just unscrew it or something?

>>33303139
Hi newfriend!
There's something called a Dolos that allows you to swap barrels and gas systems in about 30 seconds. It's been out for a few years now.
Maybe when you spend some time around ARs you'll know about stuff like this.
Have a nice day, newfriend!

>>33303093
An upper is heavy as a brick and bigger than one too. A barrel is light as a feather and narrower than one.

>>33302957
Damn what a total burn to KAC who made this exact thing in their own cartridge before .300 Blackout even existed.

>>33303877
They'll probably just choose an SR-30 upper with a PDW stock

>>33303717
MSI Hydra has a neat system as well.

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>>33302957
They already have Mk18's. Why not just swap a Mk18 upper? It's not that heavy if you don't have a BCG and charging handle.

So are they going to rely on optics and lasers capable of retaining two zeroes?

>>33303109
the swap out barrel still seems stupid. You now have the extra weight of the barrel, need to zero, new ammo, potentially dangerous situation where you might mix ammo and KABOOM, and no one is going to swap a barrel out in the middle of a firefight because the barrel would be too hot.

doesn't seem worth it.

>>33303877
Everyone in the world has made a super short M4 before.

>>33304073

Carrying a spare barrel is nothing compared to an upper.

Furthermore, the situation it would be used is if you are out of .300 blk, for which you would not be able to mix ammo, and you would do in the middle of a firefight becuase having ammo is better than using the gun as a stick.

They should take the barrel swap feature of the Ruger SR556 TD and make an SBR out of it. And have it be made by FN or something.

>>33304096
But the ballistic advantages of 300bo just don't seem to be worth this trouble.

>>33304096
At that point, I'd just pick up an AK. Most SF fight from vehicles, so just throw the upper in the truck. Or rechamber a SAW in .300 meme

>>33303686
Lock bolt back
Loosen and pull 2 bolts
Pull barrel out
Insert new barrel
Seat
Insert bolts
Tighten with included torque wrench
Done

>>33304127
The included torque wrench sucks.
But asides from that...

What exactly is the point of this thing? I really cant think of a situation where this would be sufficiently better than a suppressed M4/Mk18 to justify bringing it along. Its not like you're going to be doing Jack Bauer sentry removals with it, since even .300 isn't that quiet.

>>33304083
the KAC PDW is actually a mini SIG 550 upper with a neato cartridge and AR controls.

You'd know this if you were a /k/ommando and not a noguns fag desu senpai.

>>33304125
It is worth it in a PDW, and the ability to switch back to 5.56mm if one feels like it helped this decision happen a lot.

>>33303851

That barrel makes a good club too.

>>33303014
>SIG

>>33304125
SOCOM seems to think so.

>>33304126
Great, now you got, at most, is 30 rounds. Thats if you get lucky enough to find an AK around you. You should be slotting floppies from much farther out.

>>33304192
Good suppressed ballistics

>>33302957
>quick change barrel

What the fuck? Who is even gonna bite at this contract, SIG?

>>33302957
>total system weight, including the M4A1 lower in not to exceed 5.5lbs
Is this even possible

>>33302957
Sounds like they just need a dolos and an extra barrel, they could do this shot themselves instead of asking for someone to make a kit .

>>33304620
CAR-15s weigh 5.35 pounds. A Mk. 18 weighs 6 pounds with a heavy ass quadrail.

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>>33304620
The BCM CQB9 in .300 Blackout weighs only 5.3lbs. Hardest part is going to be finding something that's less than 2 feet long collapsed, still functions with the stock folded/collapsed, and would be compatible with an M4 lower

>>33304234
If you were a true /k/ommando you'd know that .300 Whisper has been around for ages.

I think we're breezing over the fact that the military is welcoming .300 into it's arsenal.
.300 will no longer be meme-status.
.mil-scale bulk production will lower
prices, especially the brass (the biggest cost right now)
/k/ can't rage anymore

>>33305709
FBI HRT also sourced Black Hills for .300 blackout ammo. SOCOM & FBI PDW builds soon

>>33305709
Everyone who's anyone has known .300 BLK was the future for a while now. Did you guys not watch it go from 80 cpr to 40 cpr basically overnight, and continue to drop?

>>33303139
Somebody at SHOT show (can't remember who) had a takedown AR that could come apart go together in seconds. It was the whole forward assembly, with rails etc., but that might not actually be the worst thing if you can use the front sight to zero each barrel combo.

>>33305709
This was my first thought when I saw this thread.

If nothing else, it only means good things for the civilian .300 market.

>>33305044
The stock is definitely the biggest hangup. 17" folded is pretty crazy with a traditional AR, I think the rules pretty much mandate an overhead spring piston upper so that a sidefolder can be used.

>>33305044
honestly they should just buy NEA and redo the CQB9 with a CCS stock to fulfill that requirement

Speaking of 300blk what's the best upper for it out there right now?

>>33307417
i'm sorry, i never paid attention because i thought it was really only good for suppression and i'm not allowed to do that in the democratic people's republic of kalifornia.

how wrong have i been?

>>33309357
> ballistics similar to the 7.62×39mm Soviet cartridge in an AR-15 while using standard AR-15 magazines at their normal capacity

oh. that's pretty fuckin cool, actually.

>>33303089
Bro even ruger makes a quick change barrel now, and a sub 10" barrel is still going to weight less than a second kitted out upper while being much smaller

>>33304126
>At that point, I'd just
But you aren't in any way involved with SOCOM or the needs of SF units are you, so what you would do is about as far removed from their real wants and needs as possible

>>33304030
Too simple and effective, so nobody is making money and kickbacks.

>>33307497

All that was was off the shelf parts assembled together, which is fine, because that's how many suppliers operate in MANY fields.

Take niche automotive companies like RUF. It's not uncommon and we're starting to see more of it in the firearms industry.

Why build your own variants of every part when you can just source them out from other OEM's? Slap on some creative marketing, maybe a unique feature, and call it a day.

>>33304595
Sounds like the MCX senpai, so maybe