Thread 64164667

if the ar15 design is so great why hasnt any other manufacturer copied its mechanical function? theres 20 other rifles based off the ar18 action but nobody has copied the ar15. why?

ar18 style like scar, g36, sa80, aug, cz bren, acr, beretta arx, psa jakl, etc
ar15, zero besides a direct clone of the ar15. hk416 doesnt count, its a ar15 with a ar18 gas block

>>64164667 (OP)
because the AR15 is perfect, and the AR18 was not. all the AR18 derivatives are because it sucks and everyone is trying to make a good one.

>>64164667 (OP)
>why hasnt any other manufacturer copied its mechanical function

Basically every manufacturer out there makes an exact AR clone, what are you smoking?

>>64164795
the mechanical function, not the design (how it looks or a direct clone)
the bcg doubling as a piston (ie shitting where it eats). nobody has built a rifle based on the direct impingement system of the ar15 but countless companies have jumped on the ar18 piston system and bolt design like a bitch in heat
what are you smoking?

>>64164806
There is nothing to be gained by copying the internals into a proprietary hipster receiver. Its not like its trademarked, its been a free for all since the 80s. Its also a really good design, the only substantive changes to the upper in over 50 years are the flat top and the brass deflector, while the lower has gotten some fencing around the buttons; and theres really nothing more to improve beyond gimmicks like ambi bolt catches. One of the strengths of everything being compatible is that the AR can move with changing trends, while other designs cant adapt and die. If you arbitrarily make your receiver different, you lock yourself out of that and risk extinction.

>>64164860
the ar15 and 18 we're both proprietary. the patents have long since expired but only 1 was copied by many manufacturers with different looks and the other wasnt besides a 1:1 clone
all im asking is why
why hasnt anyone took the ar15 shit where it eats direct impingement system and made a gun around it. they could have just as easily made a scar or g36 with a ar15 direct impingement system (excluding the folding stock). why go with the ar18 vs ar15 design

i mean even the swiss (sg550), swedish (ak5) and finnish (rk62) direct cloned the ak action. nobody has for the ar15

idk. its just weird to me

>>64164942
>but only 1 was copied by many manufacturers with different looks and the other wasn
whut

OP is right, the direct impingement of the AR-15 never really caught on. Whereas the AR-18 short stroke system has been widely copied and used in numerous other firearm designs.

>>64164795
I can't actually think of an instance where AR-15 system was ever adopted and used in other guns. The only guns that use the AR-15 DI system are...exact AR-15 clones.

You just proved OP's point.

>>64164667 (OP)
>why didn't they copy the DI function in any new designs?
Because the AR-15 is probably the best DI rifle you can get, why would you spend resources developing a new gun when AR-15s are so widely available?

There has been some successful guns that doesn't use long/short stroke gas piston, like the swedish AG42, french MAS 49 and the G3
>inb4 uhh G3 is not DI it's roller delayed blowback
It poops in it's own mouth, like the other DI guns

Why would they design their own special AR15 when they can just make an AR15?

>>64164667 (OP)
>theres 20 other rifles based off the ar18 action but nobody has copied the ar15. why?

Because if you're going to try and sell someone a AR-15 in a different shell without the ability to use all the billion various different attachments, handguards, stocks, triggers, and every other gubbin that is compatible with the AR-15 platform by virtue of it's massive popularity and resulting secondary market, while likely charging a large premium because you can't source parts from people making them in massive quantities for the AR-15 market, you will get laughed out of the building and told to kick rocks.

>>64165128
the thing is tho 20 years ago if you wanted one all you had was colt, kac, bushmaster and maybe stag arms and rock river
15 years ago same above plus DD, larue and lmt started popping off
10 years ago you get the hipster brands like bcm, noveske and the redheaded step child psa starting out
once the assault weapons ban sunsetted thats when you seen the ar15 market start to evolve to what it is now, before that and shortly after nobody really wanted them because they were overpriced and the vietnam stigmata took 30 years to shake off from being a jamomatic plastic toy but now the market is so flooded with ar15 stuff the last decade I can see your argument
but the ar18 designed rifles were coming around about the same time as the ar15 arc was on the upswing, now theres no dethroning the ar15. its the linux of rifles. open source and everybody uses it at some capacity same as glock, countless companies have basically cloned gen 3 glocks (psa, ruger, shadow, zev)
yet nobody has the ar15 di system, not even an attempt to slap a pig in lipstick. they always take a ar18 design and wrap it around a new shell

even the new army rifle is a ar15 exterior with a ar18 interior
weird flex, but ok

>>64164965
>everybody builds rifles exactly the same as the original design
>hurr durr if it's so good, how come they didn't change it?

???

>>64165062
OD green is pure sex

>>64165226
There has never been a mass adopted AR-18 design, so all the companies were pushing them to the US mil in the hopes that they would be adopted and become the defacto AR-15 of the AR-18 designs that everyone will build a market around. The AR-15 had already been adopted, and while the civilian market wasn't as big as it could have been, you had a massive captive market with the US mil and all the dumb grunts who wanted to bling out their rifle. You'll note that 20 years ago, most of the accessories for sale were thing that would be acceptable for a soldier to use on his rifle, or were things that were being sold by mass market companies who were trying to establish their product as a part worthy of being in the next M4 update, most notably Magpul.

The other thing you're not considering is that the AR-15 design is a free for all, and while you did have KAC try to sell proprietary AR-15 designs, it is a proven design and as such, there's no reason to invest in R&D to make another version of the same thing which means that you get to keep the unit price of the weapon down, which is good for sales, and you get the free marketing of people seeing AR-15s in the hand of US mil in general and cool guys doing cool things whenever footage of spec ops dudes comes out. There is simply no incentive to make another clone in a different shell. You can look at the Mini-14, which while an obvious different action, as a competitor to the AR-15 and see that even during the earlier days, that people weren't that interested in similar but hipster choice, and it's gotten even worse over the past 20 years as the AR-15 has come to dominate the market.

>>64165226
>20 years ago
30, actually
>15
25
>10
20
time stops for no man

>>64165245
You don't understand the question. They are asking why the AR-15s...well frankly, complex (in the comfy autist way) internals and approach have not been COPIED into other firearm platforms.

>>64166734
because the AR15 has already perfected the DI/internal piston. there's no reason to design anything else if that's the system you want for your service rifle. just buy or produce your own AR15

>>64166759
I don't even disagree with you desu, but the greater question OP asked is still valid.

It just werks and it's something you could teach someone with an 8th grade education to break down and service

>>64164667 (OP)
DI only really lends itself to one shape

>>64166793
This, really. It’s a design that lends itself to a specific configuration, and if you change it, it’s no longer the same system.

Only reason this topic exists is because the M16 was adopted by U.S. military mid-1960s as standard service rifle.
Otherwise, every post itt and OP/his idea-notion would not exist.

>>64164667 (OP)
Reckon nobody up top liked the idea of gases blowing into the receiver and near the user's face?

>>64164667 (OP)
But everyone uses ARs doe

>>64164667 (OP)
The AR15's design works and is free. Why spend time and effort reinventing the wheel?