MCX and short barrels

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[ARCHIVED THREAD] - MCX and short barrels

Posted: 2/2/2017 5:05:23 PM EDT

Does anyone know if/when Sig will be selling the shorter blackout barrels? I think like in the 6" range. Anyone have one and tested it with supers?

Posted: 2/3/2017 11:12:29 AM EDT

[#1]

Quoted:
Does anyone know if/when Sig will be selling the shorter blackout barrels? I think like in the 6" range. Anyone have one and tested it with supers?

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They are selling them now. As to when they will ship, who knows.

My 16" 300BLK barrel shipped the day after I ordered it.

Posted: 2/3/2017 11:53:15 AM EDT

[#2]

I have had a 6.75" 300 barrel on order, since March. So I am going on 11 months, and no ship date in sight. Waiting for my SBR form1 was a nap by comparison.

I am sure making an extra 25,000 bolt carrier groups for this recall has not helped. I am crossing my fingers for summer

Posted: 2/3/2017 11:57:13 AM EDT

[#3]

I really wanted a short 5.56 barrel, and I just had to wind up getting mine cut. If I ever run into a spare 16" barrel, I may pick one up, but it's not high on my priority list.

Posted: 2/5/2017 2:17:52 PM EDT

[#4]

So what is the deal on the 300 Blackout 6.75" Barrel? It's not listed anywhere. Sig says 9" in 300 and 11.5" in 5.56.

Also if they do release a 6.75" Barrel, will they have a shorter handguard to match? Shortest handguard I have seen was the 9" Barrel version.

Posted: 2/5/2017 10:21:21 PM EDT

[#5]

My order says:

Part number: CALX-MCX-6B-300B
Description: CAL-X KIT, SIGMCX, 300 BLK, 30RD MAG, 6.75IN

As for what handguard goes with that, I expect most people will opt for one of the "suppressor compliant" (fat) handguards. I have never seen a K sized handguard for MCX.

Posted: 2/6/2017 12:50:46 PM EDT

[#6]

Anybody got any pics of MCX lancer hand guard with suppressor? Anybody have these in hand yet?

Posted: 2/13/2017 9:54:21 AM EDT

[#7]

I just received shipping confirmation this morning for my 9' 300 blk conversion from SIG.

Posted: 2/13/2017 9:56:10 AM EDT

[#8]

Quote History

Quoted:
My order says:

Part number: CALX-MCX-6B-300B
Description: CAL-X KIT, SIGMCX, 300 BLK, 30RD MAG, 6.75IN

As for what handguard goes with that, I expect most people will opt for one of the "suppressor compliant" (fat) handguards. I have never seen a K sized handguard for MCX.

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First I have heard of these, as I was told by product development within Lancer that these were not even in development.

Edit: Just emailed Lancer and although you can item add to cart there is still a 14 WEEK lead time before product is ready for shipping.

Posted: 2/13/2017 3:09:00 PM EDT

[#9]

Quote History

Quoted:
I just received shipping confirmation this morning for my 9' 300 blk conversion from SIG.

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When did you order it? I have had an order placed since May 2016.

Posted: 2/13/2017 4:04:17 PM EDT

[#10]

Quote History

Quoted:

When did you order it? I have had an order placed since May 2016.

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March of last year.

Posted: 2/13/2017 4:14:09 PM EDT

[#11]

Quote History

Quoted:

First I have heard of these, as I was told by product development within Lancer that these were not even in development.

Edit: Just emailed Lancer and although you can item add to cart there is still a 14 WEEK lead time before product is ready for shipping.

View Quote

I was talking about the aluminum variety, as shown at SHOT2016:

Posted: 2/13/2017 6:10:42 PM EDT

[#12]

Quoted:
Does anyone know if/when Sig will be selling the shorter blackout barrels? I think like in the 6" range. Anyone have one and tested it with supers?

View Quote

I have all sizes - 6.75" handles supers just fine.

9" 300BO and 11.5" 556 barrels/exchange kits are starting to ship.

Posted: 2/13/2017 9:50:19 PM EDT

[#13]

Quote History

Quoted:

I was talking about the aluminum variety, as shown at SHOT2016:
http://sigforum.com/movedimages/SHOT16/day2/IMG_0576_web.jpg

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Sorry cav_scout, I meant to quote Akdocs post below yours. In regards to your post though I may also have insight into Handguards as well...hope to have pics at end of this week!

Posted: 2/13/2017 10:20:16 PM EDT

[#14]

Any chance they are selling upper/stock kits for the MCX that could go on a SBR ar15 lower?

Posted: 2/14/2017 12:17:20 PM EDT

[#15]

Im hoping I can snag one of those 6 inch barrels if they have any that aren't preordered. Would love to see what the lancer hand guard looks like on SBR.

Posted: 2/14/2017 11:51:25 PM EDT

[#16]

I gave up waiting and found a cheap 16" 556 barrel on gun broker. Waiting till I find a 300 blk barrel and will send the both to get cut.

That way way I can do away with the tapered muzzle as well.

Posted: 2/15/2017 1:10:20 AM EDT

[#17]

Quote History

Quoted:
I gave up waiting and found a cheap 16" 556 barrel on gun broker. Waiting till I find a 300 blk barrel and will send the both to get cut.

That way way I can do away with the tapered muzzle as well.

View Quote

FYI - gas systems are longer on the 16" 300BO vs the 9" and 6.75"

Posted: 2/15/2017 1:20:21 AM EDT

[#18]

Quote History

Quoted:

FYI - gas systems are longer on the 16" 300BO vs the 9" and 6.75"

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Quote History

Quoted:

Quoted:
I gave up waiting and found a cheap 16" 556 barrel on gun broker. Waiting till I find a 300 blk barrel and will send the both to get cut.

That way way I can do away with the tapered muzzle as well.

FYI - gas systems are longer on the 16" 300BO vs the 9" and 6.75"

I was wondering about that. For awhile I was seeing different OP rods but haven't in a while.
Are the "caliber conversion kits" still coming with different rods?

ETA
Im planning on having them both cut to 10.5". Will that be a problem using a 16" 300BO barrel?

Posted: 2/15/2017 7:26:14 AM EDT

[#19]

I just received a shipping confirmation on my 9" 300 blk barrel kit. Order was placed in mid March 2016.

Posted: 2/15/2017 5:15:48 PM EDT

[#20]

Quote History

Quoted:
I was wondering about that. For awhile I was seeing different OP rods but haven't in a while.
Are the "caliber conversion kits" still coming with different rods?

ETA
Im planning on having them both cut to 10.5". Will that be a problem using a 16" 300BO barrel?

View Quote View All Quotes

View All Quotes

Quote History

Quoted:

Quoted:
I gave up waiting and found a cheap 16" 556 barrel on gun broker. Waiting till I find a 300 blk barrel and will send the both to get cut.

That way way I can do away with the tapered muzzle as well.

FYI - gas systems are longer on the 16" 300BO vs the 9" and 6.75"

I was wondering about that. For awhile I was seeing different OP rods but haven't in a while.
Are the "caliber conversion kits" still coming with different rods?

ETA
Im planning on having them both cut to 10.5". Will that be a problem using a 16" 300BO barrel?

The 9" 300 barrels have a shorter gas system for a reason. Cutting a 16" length gas sytem gun to 10.5" might cause issues with dwell time, especially with subsonic 300s.

[ARCHIVED THREAD] - MCX and short barrels

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