AAC M2-2000 and 556 SD difference?

[Eurodriver]

A bunch of my buddies bought the 556SD. I have an M42K. I'm curious to see the difference when their cans are out of jail.

[trauma]

I was told baffles are machined a bit differently to save time in machining with the SD, same as the body of the can.

Biggest difference might be first round is louder with the SD. Both are inconel baffles, both cans will survive nuclear holocaust.

[Pappabear]

They are good cans. I have owned a few for many years. And just bought 2 more with no hesitation.

[GrahamKAC]

My understand echos the statements of those above.

Improved machine capabilities bring the cost of manufacture to a lower price point.

AAC's MSRP's have really come down quite a bit recently also, so the price gap isn't that large any longer.

When the M42K was selling for over $850, I paid $479 for my 556SD.

I've got shooting buddies that own M42K's and have shot them beside my 556SD.

We couldn't distinguish a difference shooting similar length barrels with the same ammo.