let me guess, you need more?

>>64075705 (OP)
1 or 2 more magazines and a five-seven also with 2 spare mags yes. 210-260 rounds on tap

>>64075705 (OP)
Yes, I need an optic. The p90 was made with the assumption that you would have one.

>>64075729
Already has one

>>64075705 (OP)
suppressor

>>64075705 (OP)
Than a spicy .22 wmr? Yea, I'd take a 9mm over that lmfao
>Inb4 somebody starts blatantly lying about the ft. Hood shooting again

>>64075735
5.7x28 from 5" barrel=.22 wmr from 16" barrel. 10.5 or 16" 5.7 mogs but still isnt enough

>>64075731
The MC-10-80 is trash, you can get any number of optics that are much nicer these days.

>>64075733

>>64075705 (OP)
Why did the PDW fail? Was it just the logistics compared to issuing people SBRs versions of service rifles?

>>64075742
now its perfect

>>64075748
Bullpups and pdws are used somewhat commonly in security forces or swat type police units where they frequent armored vehicles. Its still cheaper and easier to just get a sbr ar

>>64075705 (OP)
Why was the P90 such a beast in Stargate

>>64075705 (OP)
This is worse in every way then a PSA 11.5 AR

>>64075705 (OP)
Yes.

>>64075739
.300 Blackout from a 5" barrel is twice as powerful as 5.7 FN from a 16" barrel and the minimum OAL in the SAAMI spec is only 0.19" longer. You could easily design a P90 style magazine to fit short .300 loads without being ungainly. You might have to modify the .300 case and chamber slightly to take out the taper.

>>64076987
Make it so and I will buy one

>>64077000
I'm working on it but you won't be able to buy one because I won't fill out permission slips to exercise my constitutional rights.

>>64076593
Any AR under 14.5 is MASSIVELY gay

>>64076987
>>64077028
Someone was already working on a .300blk P90, they should make the OAL longer so there's enough gun to shoulder properly and the magazine depth doesn't suffer

>>64075705 (OP)
What's funny about that traditional optic is it projects light forward and backward, so in a dark setting your reticle appears on a wall in front of you.

>>64077149
There's the P90BLK but it's designed for full-length .300 Blackout so it's got an enormous magazine that looks awful. It also uses a BRN-180 receiver upside down so it ejects into your face and costs as much as an actual PS90.

The right way to do it is to design it around a shortened .300BLK or possibly standard-length .221 Fireball, and make it gas operated rather than blowback to reduce the necessary length. With a Spencer-Bannerman-style tilting block, you could get another 4-5" of barrel and magazine into the same length frame as a normal P90, and it would maintain the bottom ejection.

I know the short barrel is far more iconic and practical, given the gun's role, but I prefer the look of the 16" barrel. The slight velocity boost from the longer barrel is just a bonus.

>>64077161
wtf lol

>>64077161
Sounds awesome for passive aiming.

>>64077229
>The right way to do it is to design it around a shortened .300BLK or possibly standard-length .221 Fireball
Or...THE 331 FIREBALL! Yes I totally just made that up and it's actually still .30 but 331 sounds cooler and references its .221 inspiration and every other stupid new caliber pulls that shit so sue me. Or maybe name it the 331 Blueball because YWN get to see this happen.

>>64075705 (OP)
I used to play with a guy who'd get 100+ kills with this gun on cod4

>>64075705 (OP)
Yes, where's my vehicle? These were intended for vehicle crew.

>>64075705 (OP)
Need a super safety

>>64077370
>THE 331 FIREBALL! Yes I totally just made that up and it's actually still .30
So... .300 Blackout?

>>64077833
>.223 Case Length: 44.70 mm
>.221 Case Length: 35.6 mm
>.300 Case Length: 34.7 mm
Huh, well I'll be damned. However you do already trim the brass for .223 -> .221 conversion (https://www.youtube.com/watch?v=ORfPgmkmdpo) and even .223 -> 300 (https://www.youtube.com/watch?v=o1_lb7Uo3lM) so in my head I was thinking that you'd keep going and trim it even shorter for this theoretical .221 scale .300 BO. However I did totally leave the neck at the same spot and cheated a little so you're not totally wrong. Maybe this is a little more realistic.

>just realized I missed the chance to call it the .321 Fireball
FUCK.

>>64077927
All of the .300BLK's length is in the bullet since it's designed for long-ass subsonics. You could cut it down a little, but you'd quickly run out of case capacity. The "shortened .300 Blackout" I was envisioning was more of a specialized loading than a new cartridge. Take out the taper and load it with a 100gr hardcast semiwadcutter and you'd get something around 1.8" long, a full half inch shorter than AR-15 mag length and short enough that you might even be able to fit it in a handgun like the PR57 and still have people be able to hold it.

>>64075705 (OP)
RASH B

>>64075705 (OP)
UH, YES, ACTUALLY, I DO.

>>64078021
Load the cunt with .32 bullets

>>64078327
The base is .375, why not just make it straight walled?

>>64078021
I made that pic/cartridge more as a joke than anything anon lol. Didn't intend for this to become actual discussion.

>>64078354
That sounds just like a not-.350 Legend or a .350-ish Legend short.
>.350 Legend has no parent case
>The .350 Legend shares many characteristics with the .223 Remington, such as an overall cartridge length of 2.26 inches (57 mm) and a rim diameter of .378 inches (9.6 mm).
>43mm case length
Or, like, .357 Remington Maximum (maybe?) but not rimmed going by case length (40.8mm) ignoring the theoretical loadings as I'm unfamiliar with that cartridge. Base dia is also pretty close for all of them, too, in the .375 to .390 range. What I'm trying to say is dimensionally they're close, but loads and available barrels/twist rate, IDK.

>>64075705 (OP)
Buying one and all the parts in one go if the NFA laws change. Should I be hoarding ammo just in case?

>>64077284
I don't hate the long barrel look either. I just hate that it's a fake shroud tube pinned over an actual barrel.

>>64079300
Is the whole 'barrel' a shroud, or just the flash hider bit?

>>64078438
There is a little known cartridge called the 338 Thumper which is a true straight-walled 5.56/221/whatever. .378 case head.

Needs a larger magazine
And having to slide the thing on top is very unintuitive

>>64075705 (OP)

Yes.(with an FRT)

>>64078438
> .350-ish Legend

Also a hilarious name for a cartridge

>>64077149
>Any AR under 14.5 is MASSIVELY gay
It's literally the same gun but better

>>64083658
>wasting a significant amount of your cartridge's energy spewing unburned powder

>>64083714
>Damn kids and their unburt powder
Fuddlore of the century, all of the powder burns immediately after you pull the trigger

>>64078438
>>64079471
Can't be tapered if it's going in a P90, has to be a .375 Thumper.