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MCX Spear (Page 37 of 37)

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3/3/2026 8:41:03 AM EDT
[#1]
Congrats for making it!  I hope many people will take advantage of it!
3/3/2026 12:31:59 PM EDT
[#2]
I actually took a class with the SIG SPEAR 308 and yeah a lot of people were "impressed" I was able to handle it. Here's what I found out about it though: get a padded sling. After the class I went and bought a padded vtac with it.

I read a lot of people looking to buy a better gas vent for their rifle and I'm not sure why people are doing this. Is it because of the recoil? I have gotten the SIG SPEAR 308 as a Christmas gift and have been shooting it now for about 2 months. At first, I was shocked by the recoil of it more so than my 5.56 rifles. I had a M1A before and it was not that bad from what I remembered.

However, after a few session, I was able to shoot it without issues. My thought is that before you go too crazy trying to tame it, try to shoot it more. It appears to be working better now, at least for me. I'm able to make 3 shot groups fairly well with it.

I plan to test some of the cheap russian tulammo later as I have a few boxes of it.
3/3/2026 8:04:58 PM EDT
[#3]
Quote History
Originally Posted By dalle0001:
I actually took a class with the SIG SPEAR 308 and yeah a lot of people were "impressed" I was able to handle it. Here's what I found out about it though: get a padded sling. After the class I went and bought a padded vtac with it.

I read a lot of people looking to buy a better gas vent for their rifle and I'm not sure why people are doing this. Is it because of the recoil? I have gotten the SIG SPEAR 308 as a Christmas gift and have been shooting it now for about 2 months. At first, I was shocked by the recoil of it more so than my 5.56 rifles. I had a M1A before and it was not that bad from what I remembered.

However, after a few session, I was able to shoot it without issues. My thought is that before you go too crazy trying to tame it, try to shoot it more. It appears to be working better now, at least for me. I'm able to make 3 shot groups fairly well with it.

I plan to test some of the cheap russian tulammo later as I have a few boxes of it.
View Quote


Are you running it with a can or no can ...

Recoil on the Spear is stout ... both ways but its really noticeable with a traditional suppressor  ...
3/4/2026 5:28:56 AM EDT
[#4]
Quote History
Originally Posted By thehun06:


Are you running it with a can or no can ...

Recoil on the Spear is stout ... both ways but its really noticeable with a traditional suppressor  ...
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By thehun06:
Originally Posted By dalle0001:
I actually took a class with the SIG SPEAR 308 and yeah a lot of people were "impressed" I was able to handle it. Here's what I found out about it though: get a padded sling. After the class I went and bought a padded vtac with it.

I read a lot of people looking to buy a better gas vent for their rifle and I'm not sure why people are doing this. Is it because of the recoil? I have gotten the SIG SPEAR 308 as a Christmas gift and have been shooting it now for about 2 months. At first, I was shocked by the recoil of it more so than my 5.56 rifles. I had a M1A before and it was not that bad from what I remembered.

However, after a few session, I was able to shoot it without issues. My thought is that before you go too crazy trying to tame it, try to shoot it more. It appears to be working better now, at least for me. I'm able to make 3 shot groups fairly well with it.

I plan to test some of the cheap russian tulammo later as I have a few boxes of it.


Are you running it with a can or no can ...

Recoil on the Spear is stout ... both ways but its really noticeable with a traditional suppressor  ...


My 13" doesn't feel all that bad, even with a can on. I was able to get shots on target faster with it than my 13.5" LMT 308.
3/4/2026 10:10:52 AM EDT
[#5]
I don't own a gun and I don't live in the US, so I can't email SIG to ask.
I'd like someone to ask if possible.

・There is an 「A」 mark on the right side of the MCX-SPEAR upper receiver. Which company's forge mark is this?

・What is the purpose of the black plastic part on the left side of the MCX-SPEAR (7.62) handguard?
3/4/2026 12:27:58 PM EDT
[#6]
Quote History
Originally Posted By dalle0001:
I actually took a class with the SIG SPEAR 308 and yeah a lot of people were "impressed" I was able to handle it. Here's what I found out about it though: get a padded sling. After the class I went and bought a padded vtac with it.

I read a lot of people looking to buy a better gas vent for their rifle and I'm not sure why people are doing this. Is it because of the recoil? I have gotten the SIG SPEAR 308 as a Christmas gift and have been shooting it now for about 2 months. At first, I was shocked by the recoil of it more so than my 5.56 rifles. I had a M1A before and it was not that bad from what I remembered.

However, after a few session, I was able to shoot it without issues. My thought is that before you go too crazy trying to tame it, try to shoot it more. It appears to be working better now, at least for me. I'm able to make 3 shot groups fairly well with it.

I plan to test some of the cheap russian tulammo later as I have a few boxes of it.
View Quote


So now that you're used to the feel of the weapon and are doing well with it, consider how well you'd do if you reduced the recoil by a substantial amount.
3/4/2026 12:32:08 PM EDT
[Last Edit: jbdDesigns][Edited] [#7]
Quote History
Originally Posted By Zerlak:


My 13" doesn't feel all that bad, even with a can on. I was able to get shots on target faster with it than my 13.5" LMT 308.
View Quote


Like I said to the other fella, now consider taking the rifle that "doesn't feel that bad" and reduce the recoil substantially.

Also, if you want to truly enjoy shooting a can on this thing, you need to eliminate the port pop. With the OEM valve and a silencer, the action opens so fast that the pressurized burst from the chamber escapes at such a velocity that it ruins the experience. This device eliminates that.


None of you folks *have* to buy anything. I'm just here to tell you this makes your gun objectively better :)
3/4/2026 12:43:24 PM EDT
[#8]
Quote History
Originally Posted By jbdDesigns:


Like I said to the other fella, now consider taking the rifle that "doesn't feel that bad" and reduce the recoil substantially.

Also, if you want to truly enjoy shooting a can on this thing, you need to eliminate the port pop. With the OEM valve and a silencer, the action opens so fast that the pressurized burst from the chamber escapes at such a velocity that it ruins the experience. This device eliminates that.


None of you folks *have* to buy anything. I'm just here to tell you this makes your gun objectively better :)
View Quote View All Quotes
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Quote History
Originally Posted By jbdDesigns:
Originally Posted By Zerlak:


My 13" doesn't feel all that bad, even with a can on. I was able to get shots on target faster with it than my 13.5" LMT 308.


Like I said to the other fella, now consider taking the rifle that "doesn't feel that bad" and reduce the recoil substantially.

Also, if you want to truly enjoy shooting a can on this thing, you need to eliminate the port pop. With the OEM valve and a silencer, the action opens so fast that the pressurized burst from the chamber escapes at such a velocity that it ruins the experience. This device eliminates that.


None of you folks *have* to buy anything. I'm just here to tell you this makes your gun objectively better :)


No port pop with my can. ;)

SIG SLX series can. Flow through design with very little blowback.
3/4/2026 8:56:01 PM EDT
[#9]
Indeed, you can also eliminate the port pop by increasing the mass flow rate in the silencer and resulting in a higher than necessary muzzle signature. This is what the forums have been telling MCX users for the better part of a decade. "Buy a 'Flow Through,' everything else is bad on the MCX."
3/4/2026 10:58:30 PM EDT
[#10]
Quote History
Originally Posted By jbdDesigns:
Indeed, you can also eliminate the port pop by increasing the mass flow rate in the silencer and resulting in a higher than necessary muzzle signature. This is what the forums have been telling MCX users for the better part of a decade. "Buy a 'Flow Through,' everything else is bad on the MCX."
View Quote


I used a surefire SOCOM gen 1 can on both the 11.5" Virtus and Spear-LT. It really wasn't bad and was comparible to a Geissele 11.5".

The sound was about the same too.
3/5/2026 9:49:36 PM EDT
[Last Edit: vellnueve][Edited] [#11]
Originally Posted By kyaroto7:
I don't own a gun and I don't live in the US, so I can't email SIG to ask.
I'd like someone to ask if possible.

・There is an 「A」 mark on the right side of the MCX-SPEAR upper receiver. Which company's forge mark is this?

・What is the purpose of the black plastic part on the left side of the MCX-SPEAR (7.62) handguard?
View Quote



A is the Anchor Harvey forge mark.

The black plastic piece is the "side charge guard" - I believe its there to guide your hand onto the side charging handle without getting on the rail. I don't recall the handle going far forward enough where it hits that actual piece.
3/5/2026 9:57:47 PM EDT
[#12]
Quote History
Originally Posted By Zerlak:


I used a surefire SOCOM gen 1 can on both the 11.5" Virtus and Spear-LT. It really wasn't bad and was comparible to a Geissele 11.5".

The sound was about the same too.
View Quote


I will literally send you a valve for that 11.5" MCX so you can do it again with the gun tuned for that can and never say that that experience "wasn't that bad" again.
3/6/2026 2:28:17 AM EDT
[#13]
Quote History
Originally Posted By jbdDesigns:


I will literally send you a valve for that 11.5" MCX so you can do it again with the gun tuned for that can and never say that that experience "wasn't that bad" again.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By jbdDesigns:
Originally Posted By Zerlak:


I used a surefire SOCOM gen 1 can on both the 11.5" Virtus and Spear-LT. It really wasn't bad and was comparible to a Geissele 11.5".

The sound was about the same too.


I will literally send you a valve for that 11.5" MCX so you can do it again with the gun tuned for that can and never say that that experience "wasn't that bad" again.


I appreciate the offer, I parted ways with both due to semi recent hardships of a competitor to my employer buying us out and axing everyone.

Last 2 MCX setups I have are the Spear 13" and RSAR.
3/7/2026 9:10:05 AM EDT
[#14]
Quote History
Originally Posted By vellnueve:



A is the Anchor Harvey forge mark.

The black plastic piece is the "side charge guard" - I believe its there to guide your hand onto the side charging handle without getting on the rail. I don't recall the handle going far forward enough where it hits that actual piece.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By vellnueve:
Originally Posted By kyaroto7:
I don't own a gun and I don't live in the US, so I can't email SIG to ask.
I'd like someone to ask if possible.

・There is an 「A」 mark on the right side of the MCX-SPEAR upper receiver. Which company's forge mark is this?

・What is the purpose of the black plastic part on the left side of the MCX-SPEAR (7.62) handguard?



A is the Anchor Harvey forge mark.

The black plastic piece is the "side charge guard" - I believe its there to guide your hand onto the side charging handle without getting on the rail. I don't recall the handle going far forward enough where it hits that actual piece.



The AH mark on the lower receiver is different so I thought it was made by a different manufacturer, but it turns out it's just a different variation!

So the plastic part is a handle guard!
Thank you!
3/16/2026 8:36:11 AM EDT
[#15]
Quote History
Originally Posted By Zerlak:


My 13" doesn't feel all that bad, even with a can on. I was able to get shots on target faster with it than my 13.5" LMT 308.
View Quote


13" guns for whatever reason are gassed more tame from Sig vs the 16"
3/19/2026 2:24:40 PM EDT
[#16]
The Sig M8 Revealed! The Army’s “New” Rifle Explained (SIG Interview)
3/22/2026 3:10:05 AM EDT
[Last Edit: Roadblock][Edited] [#17]
Why Every Major Power is Racing to Build This Rifle


Normally I only post the "SPEAR/M7/M8" specific videos but I found this one to be interesting and it does include the SPEAR 6.8..

Apparently both Russia and China are working on their own versions of a high velocity round and new firearms in response to the SIG SPEAR 6.8.

The Russian AK-22 in 6.02x41 and the Chinese QBZ-191 in 6.8. Both are designed for body armor and light armor penetration.



3/22/2026 8:45:34 AM EDT
[#18]
Quote History
Originally Posted By Roadblock:
https://www.youtube.com/watch?v=NMNvTD8t33U

Normally I only post the "SPEAR/M7/M8" specific videos but I found this one to be interesting and it does include the SPEAR 6.8..

Apparently both Russia and China are working on their own versions of a high velocity round and new firearms in response to the SIG SPEAR 6.8.

The Russian AK-22 in 6.02x41 and the Chinese QBZ-191 in 6.8. Both are designed for body armor and light armor penetration.



View Quote


I don't know if I quite believe the video for a few reasons: 1. it would mean the Russian/Chinese stole design specifications or were purchased through civilian means or someone spying and selling illegal information. 2. The SPEAR while officially designated M7, is not actually in any sort of full use or shipment. As far as I can tell they are currently only adopted still in test use and not in widespread use. 3. So far it doesn't sound like the newer 6.8 round is being adopted in NATO. So far the only known rifle that shoots it is the SIG and I believe SIG has a patent on the round? Not sure if that is correct but as far as NATO goes, it's not adopted yet.

Finaly as 4th point, when the M855 round came out, as far as I can tell China and Russia did not responded with any sort of upgraded round of their own. I believe the 7.62x39 and 5.45x39 rounds were both remaining the same. The only possible response item might have been the 7.62x54 but again that has been in use for decades and doesn't seem to have changed.
3/26/2026 10:20:11 PM EDT
[#19]
Quote History
Originally Posted By dalle0001:


I don't know if I quite believe the video for a few reasons: 1. it would mean the Russian/Chinese stole design specifications or were purchased through civilian means or someone spying and selling illegal information. 2. The SPEAR while officially designated M7, is not actually in any sort of full use or shipment. As far as I can tell they are currently only adopted still in test use and not in widespread use. 3. So far it doesn't sound like the newer 6.8 round is being adopted in NATO. So far the only known rifle that shoots it is the SIG and I believe SIG has a patent on the round? Not sure if that is correct but as far as NATO goes, it's not adopted yet.

Finaly as 4th point, when the M855 round came out, as far as I can tell China and Russia did not responded with any sort of upgraded round of their own. I believe the 7.62x39 and 5.45x39 rounds were both remaining the same. The only possible response item might have been the 7.62x54 but again that has been in use for decades and doesn't seem to have changed.
View Quote
I believe the US  Army has around 25~30,000 M7's in inventory now. Not sure how they are using them.
3/28/2026 7:34:32 PM EDT
[Last Edit: Roadblock][Edited] [#20]
NEW Report Shows Issues With NGSW M7, M250, & XM157


4/1/2026 3:48:43 PM EDT
[Last Edit: dalle0001][Edited] [#21]
Did anyone else discussed on this forum that the SPEAR is basically an upside down M1a/M14? It has a near identical part 1-to-1 translation. A long op rod that attaches to the bolt, a recoil guide that goes into the op rod, the piston that has the two pieces with a cylinder that builds up gas pressure.

The only difference is that it is all internal but otherwise the system is nearly identical in everyway. Anyone else notices this?

Sorry if this been brought up before. I was at the gun shop looking over a M1a and it didn't really hit me until today that it is a upside down m1a.
4/2/2026 3:37:30 PM EDT
[#22]
Quote History
Originally Posted By dalle0001:
Did anyone else discussed on this forum that the SPEAR is basically an upside down M1a/M14? It has a near identical part 1-to-1 translation. A long op rod that attaches to the bolt, a recoil guide that goes into the op rod, the piston that has the two pieces with a cylinder that builds up gas pressure.

The only difference is that it is all internal but otherwise the system is nearly identical in everyway. Anyone else notices this?

Sorry if this been brought up before. I was at the gun shop looking over a M1a and it didn't really hit me until today that it is a upside down m1a.
View Quote


Its not the same, the op rod is not connected to the bolt carrier. The mini 14 is the same hence the mini 14 instead of m14.
"I am gonna laugh my ass off looking out the air vent of the box car watching some of you shot in the head in a ditch when you finally realize it's time to resist." stolen from RR_broccoli
5/1/2026 5:59:07 AM EDT
[#23]
Update on my broken charging handle spring.  
After a month and a half I have been sent a molded charging handle, but not the spring (which was the broken part).  Since it takes months to get parts imported I just bought a bunch of torque springs to find which one would fit the best.  
For anyone in future that has the same issue and wants to fix it, I went with a 90 degrees right-wind torque spring.  

The molded charging handle of the .277 version requires a shorter bolt as well as it’s overall thinner, so I’ll stick with the original one.




5/13/2026 8:05:26 AM EDT
[Last Edit: thehun06][Edited] [#24]
nevermind
6/17/2026 10:38:09 PM EDT
[#25]
Apparently, SIG and the US Army have confirmed the M7 program is dead. The M8 will still be used for something.

So, does this mean SIG has some of the updated rails to sell now? Asking for a friend.
6/18/2026 2:04:20 PM EDT
[#26]
Figured! XM8 (soon to be M8) is a really good step forward in the program ...
6/18/2026 3:51:44 PM EDT
[#27]
I've never understood how these programs are able to go forward and then just abondoned. It's so wasteful. I was still selling guns when the Army wanted a 45 and everyone jumped in only for it to be cancelled before completion. Talking to one of the factory reps they were talking about how it's a shitty situation because they sunk millions into the gun program and now the only recourse they had was to hope to recoup some of it on the commercial market.
BikerNut:
Normal people like motorcycles. Real people like motorcycles.

People who don't like motorcycles are just... weird.
6/19/2026 1:59:11 AM EDT
[Last Edit: vellnueve][Edited] [#28]
Quote History
Originally Posted By ALASKANFIRE:
I've never understood how these programs are able to go forward and then just abondoned. It's so wasteful. I was still selling guns when the Army wanted a 45 and everyone jumped in only for it to be cancelled before completion. Talking to one of the factory reps they were talking about how it's a shitty situation because they sunk millions into the gun program and now the only recourse they had was to hope to recoup some of it on the commercial market.
View Quote


The M8 is literally a product improved M7.
6/19/2026 2:12:00 AM EDT
[#29]
Quote History
Originally Posted By vellnueve:



The M8 is literally a product improved M7.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By vellnueve:

Originally Posted By ALASKANFIRE:
I've never understood how these programs are able to go forward and then just abondoned. It's so wasteful. I was still selling guns when the Army wanted a 45 and everyone jumped in only for it to be cancelled before completion. Talking to one of the factory reps they were talking about how it's a shitty situation because they sunk millions into the gun program and now the only recourse they had was to hope to recoup some of it on the commercial market.


The M8 is literally a product improved M7.

I understand that. Is this thing going to be the main Army gun? Or just used in small batches?
BikerNut:
Normal people like motorcycles. Real people like motorcycles.

People who don't like motorcycles are just... weird.
6/19/2026 12:36:27 PM EDT
[#30]
Quote History
Originally Posted By ALASKANFIRE:

I understand that. Is this thing going to be the main Army gun? Or just used in small batches?
View Quote


I believe the idea is for it to be used by the infantry and other units likely to seek out and engage in combat. I would suspect support units would maintain M4s, much like the mix with the Marines with M27s and M4s.
6/20/2026 9:44:51 AM EDT
[Last Edit: Klems][Edited] [#31]
What's the source for the M7 being cancelled? I get that the M8 is moving forward.
6/20/2026 10:25:00 AM EDT
[#32]
Quote History
Originally Posted By Klems:
What's the source for the M7 being cancelled? I get that the M8 is moving forward.
View Quote


Every video I've seen says it hasn't. Units can still order the M7 if they wanted a longer config.
6/20/2026 11:17:40 PM EDT
[#33]
Quote History
Originally Posted By Klems:
What's the source for the M7 being cancelled? I get that the M8 is moving forward.
View Quote
The person that reported it said that both SIG and the US Army confirmed it at Eurosatory 2026, which is going on right now.

6/21/2026 3:24:38 PM EDT
[Last Edit: Roadblock][Edited] [#34]
7.62x51 DMR

I want that stock.


6/21/2026 4:52:08 PM EDT
[#35]
Quote History

Looks like they took the Cross stock and dropped it a bit.
BikerNut:
Normal people like motorcycles. Real people like motorcycles.

People who don't like motorcycles are just... weird.
6/23/2026 3:53:39 PM EDT
[#36]
Man ... if they would offer a 10" 7.62x51 barrel ... I'd be game!!!
6/30/2026 10:21:18 PM EDT
[Last Edit: Roadblock][Edited] [#37]
"Army says M7 'production line has changed to the XM8' carbine"

https://taskandpurpose.com/news/army-xm-8-production/

7/2/2026 8:49:58 AM EDT
[#38]
Quote History
Originally Posted By Roadblock:
"Army says M7 'production line has changed to the XM8' carbine"

https://taskandpurpose.com/news/army-xm-8-production/

View Quote


It is the right move ...
7/7/2026 9:20:50 PM EDT
[Last Edit: Roadblock][Edited] [#39]





7/9/2026 9:17:52 AM EDT
[#40]
Nice rig! Vented gas plug should be factory ... IMHO
8/1/2026 9:05:04 AM EDT
[#41]
https://www.instagram.com/lynndons/p/DbOPuD8lJYB/?img_index=1

It looks like the polymer spring guide on the M7 rifle has bent.
Is your spring guide made of polymer? Has it ever bent?
8/1/2026 4:42:51 PM EDT
[#42]
Quote History
Originally Posted By kyaroto7:
https://www.instagram.com/lynndons/p/DbOPuD8lJYB/?img_index=1

It looks like the polymer spring guide on the M7 rifle has bent.
Is your spring guide made of polymer? Has it ever bent?
View Quote
Mine is made from lightweight aluminum, I just removed it and double checked.

I have one of the OG 308's, I've had it a couple few years now.
8/1/2026 4:57:48 PM EDT
[#43]
Quote History
Originally Posted By thehun06:
Nice rig! Vented gas plug should be factory ... IMHO
View Quote
Still undecided what to do with this rifle. I will technically do not have an optic for it, borrowing an optic off another build.

I'm either going to just buy a PLXC Griffin-Mil/ACRO P2 combo or sell/trade the 16" barrel and rail and convert it to a 13", toss on either an EOTech or a Romeo 8T AMR Shroud.

If I go 13", I might FRT it.

8/2/2026 8:43:35 AM EDT
[Last Edit: kyaroto7][Edited] [#44]
Originally Posted By Roadblock:
Mine is made from lightweight aluminum, I just removed it and double checked.

I have one of the OG 308's, I've had it a couple few years now.
View Quote



Thank you for your reply!
I wonder if recent models use resin, or if that applies only to military versions.
Alternatively, the "polymer" description might just be a joke about it bending.
8/2/2026 3:16:40 PM EDT
[#45]
Quote History
Originally Posted By kyaroto7:



Thank you for your reply!
I wonder if recent models use resin, or if that applies only to military versions.
Alternatively, the "polymer" description might just be a joke about it bending.
View Quote
That bent one sure doesn't look any different than mine.  
8/3/2026 6:39:58 PM EDT
[#46]
Don't underestimate the ability of a soldier to break anything.
8/3/2026 7:33:01 PM EDT
[Last Edit: Roadblock][Edited] [#47]
Quote History
Originally Posted By vellnueve:
Don't underestimate the ability of a soldier to break anything.
View Quote
This is why I don't clean my rifles, I don't want to break them.  

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