Wanting a .45ACP AR completed carbine

[foxtrotx1]

I suppose in theory a DI system lets you lower the reciprocating mass and reduce weight.... but they built it out of aluminum soo.... that ship sailed.

All reports I have seen have said that the Piston on the MPX jets way more gas back at the shooter.

Blowback is simpler...

[thei3ug]

I know of two guys making DI .45 ACP upper groups for AR rifles. RMW Extreme and macon armory. to what extent they do conversions or will sell bolt groups, I don't know. I'm also unsure of the reliability. When people first started experimenting with DI .45 rifles, they seemed to foul up after 500 rounds or so, maybe that was a design issue that was solved in the past five years. I don't know. But they do exist. And they shoot soft. Way less mass necessary in both the bolt and the buffer. noticeably softer than blowback.

edit - here you go,

https://www.m4carbine.net/showthread...EW-*PIC-HEAVY*

https://www.m4carbine.net/showthread...10#post1663110

[SteyrAUG]

It has the same tappet system of the MCX it is just right ahead of the chamber. Supposedly it is designed that way because a firearm that has a locking chamber will be quieter when fired suppressed vis-a-vis a blowback/delayed blowback gun.

Now I understand. Thanks.

[misfit47]

The Macon machine di guns have been around and proven for a while. Softer shooting and reliable. You can get conversion or whole rifle/pistol.

[MOLON AABE]

https://youtu.be/cKmNB0HBVsc

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