Liberal Forum

Blackvegetable » 23 Apr 2021, 10:23 am » wrote: ↑

23 Apr 2021, 10:23 am

I did..

That says nothing about design.

But this part of your citation DOES.

Due to financial problems, and limitations in terms of manpower and production capacity, ArmaLite sold the AR-15 design and the AR-15 trademark along with the ArmaLite AR-10 to Colt's Manufacturing Company in 1959.[4] Colt started selling the semi-automatic version of the M16 rifle as the Colt AR-15 in 1964.[5][6][7] 

Nod.

This is the lower receiver:


That was redesigned.

This is the bolt carrier:



That was redesigned

This is the trigger group.  That was redesigned:



That is everything that makes a rifle an automatic battlefield weapon.  Even the barrell twist was different.  Remember, the Sporter did not fire 5.56.  It fired .223.

The first difference is the higher pressure level of the 5.56 NATO cartridge which runs at approximately 58,000 psi. A 223 Remington is loaded to approximately 55,000 psi. The second and most important difference between the two is the fact that a 5.56 NATO chamber has a . 125” longer throat.

You increase the chance of jamming if you use the wrong ammo.  The 5.56 was designed for combat and the higher pressure needed to cycle the bolt in combat.