SIG MCX: When is an AR not an AR?

[Sensei]

Alright, tested it. The stock flash hider came off easily after I removed the handguard and put the barrel in a set of wooden vice blocks.

Torqued a Saker Trifecta flash hider on, attached my Saker 762, and it's not concentric. Looking down the bore it's lopsided, quite a bit. I don't think I'd get a baffle strike since I'm running the 762 version, but I'm not going to risk it.

Thanks for the update. It sounds like the barrel taper is a great design if you plan to use Sig suppressors. Unfortunately, I'm heavily invested in Surefire and KAC cans. Thus, I'm going to pass until there is an adapter.

[Tokarev]

I have an AAC 51T flash hider screwed directly against the taper on my 300BLK barrel. I've had no problems with it while using my AAC suppressor.

[Slippers]

Silencerco also told me to use the adapter, and not to run their muzzle devices up against the taper.

[BoringGuy45]

Just got one into the store today. Really slick rifle! It has the familiarity of the AR, which is excellent. Overall, felt solid. What I would like to see upgraded and/or changed in future generations of this rifle:

-It's a bit of a PITA to put those springs and guide rods back together. If I need to remove them to take down the bolt, I want a way of removing the whole thing as a unit to make it more efficient rather than having to take apart the spring and guide rod. That would be a good upgrade.

-Better trigger (easy enough though; I would put in a Geissele anyway)

-As I said before, I'd like Magpul to make a Zhukov style stock for this thing. I didn't like the wire stock.

-I want a thinner, lower profile M-Lok still

All in all, without actually firing this thing, it's pretty much what I expected. And that's a good thing.

[Slippers]

I went Geissele G2S in mine to replace the 100 lb trigger. I'm debating a form 1 followed by chopping the 16" barrel down, or wait and see what Sig comes up with.

Edit: Sig is sending me the taper barrel adapter for normal muzzle devices. Yay!

[krm375]

Looks like some Anti terror police in Britain get some use out of the SIG MCX, The Article states Sig 516 but pictures ATB SBR MCX.

http://www.dailymail.co.uk/news/arti...e-Britain.html

[JoshNC]

Looks like some Anti terror police in Britain get some use out of the SIG MCX, The Article states Sig 516 but pictures ATB SBR MCX.

http://www.dailymail.co.uk/news/arti...e-Britain.html

Hahahaha....the caption in the photo detailing the various kit states that the effective range is 350 ft.

[Tokarev]

I went Geissele G2S in mine to replace the 100 lb trigger. I'm debating a form 1 followed by chopping the 16" barrel down, or wait and see what Sig comes up with.

Edit: Sig is sending me the taper barrel adapter for normal muzzle devices. Yay!

I wouldn't mind getting a barrel adapter for mine. Was there anyone specific you talked to at SIG about this?

[Tokarev]

Hahahaha....the caption in the photo detailing the various kit states that the effective range is 350 ft.

I imagine the MCX is VERY effective at 350 ft!

[Slippers]

I wouldn't mind getting a barrel adapter for mine. Was there anyone specific you talked to at SIG about this?

I would give Jim a call. He was very helpful and knew all about the adapter:

Jim Hadley
Technical Service Specialist - Silencers
jim.hadley@sigsauer.com
D: +1 (603) 610-3849