High round count PCC's and how they well they do or don't handle long-term use. - Page 2

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[ARCHIVED THREAD] - High round count PCC's and how they well they do or don't handle long-term use. (Page 2 of 2)

Posted: 8/25/2017 3:09:36 PM EDT

[#1]

I'll add a 5th request for an MPX report.

Posted: 8/25/2017 5:39:56 PM EDT

[#2]

Looking forward to a breakdown of the MP5 series guns.

Posted: 8/25/2017 5:46:36 PM EDT

[#3]

Quote History

Quoted:
Looking forward to a breakdown of the MP5 series guns.

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https://www.ar15.com/forums/armory/My-experiences-with-high-round-count-HK-s-and-HK-clones/9-476802/

Posted: 8/26/2017 4:09:02 AM EDT

[#4]

Good to hear about the Century UZI, I have one. Should last my life time doubt I will ever get to 20k rounds fired.

Posted: 8/26/2017 8:01:35 AM EDT

[#5]

Quote History

Quoted:
https://www.ar15.com/forums/armory/My-experiences-with-high-round-count-HK-s-and-HK-clones/9-476802/

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Quoted:

Quoted:
Looking forward to a breakdown of the MP5 series guns.

https://www.ar15.com/forums/armory/My-experiences-with-high-round-count-HK-s-and-HK-clones/9-476802/

And im even subscribed to that thread.

Posted: 8/28/2017 10:59:57 AM EDT

[#6]

My experience with full auto MPX rental guns (I'm a 07/02 and have converted a ton) is the weak link of the system is the piston. Sig vehemently denies it, but the only part of the guns we ever have to service is the piston. we get slivers of jacket material and ton of carbon buildup, and if they aren't serviced fairly regularly, the piston will seize up preventing it from going into battery.

We literally take the guns apart, clean the piston, then put them back together without needing to service any other part of them.

We don't go through ammo at the same rate as BFV, but our oldest has over 30k on it and is still going strong.

Posted: 8/29/2017 1:43:05 PM EDT

[#7]

Quote History

Quoted:
My experience with full auto MPX rental guns (I'm a 07/02 and have converted a ton) is the weak link of the system is the piston. Sig vehemently denies it, but the only part of the guns we ever have to service is the piston. we get slivers of jacket material and ton of carbon buildup, and if they aren't serviced fairly regularly, the piston will seize up preventing it from going into battery.

We literally take the guns apart, clean the piston, then put them back together without needing to service any other part of them.

We don't go through ammo at the same rate as BFV, but our oldest has over 30k on it and is still going strong.

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How often are you having to clean the MPX? Have you changed the barrel on the MPX with 30,000 rounds on it?

Posted: 8/29/2017 2:44:14 PM EDT

[#8]

Any range data on 9mm ARs (Colt SMG, Rock River Arms, etc.)?

Anecdotally, I've heard the extractors can be a weak point. Haven't put nearly enough rounds through mine to test that theory.

Posted: 8/29/2017 7:28:35 PM EDT

[#9]

Quote History

Quoted:

How often are you having to clean the MPX? Have you changed the barrel on the MPX with 30,000 rounds on it?

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We don't let them get to more than ~1,500 rounds between cleaning the pistons. The other parts of the guns we clean when the crud gets really thick. We have not replaced any barrels yet.

Posted: 8/31/2017 11:51:18 PM EDT

[#10]

tag for cz

Posted: 9/1/2017 9:08:06 AM EDT

[#11]

@hendersondefense Just tagging him to remind him we're still here.

Posted: 9/2/2017 7:18:33 PM EDT

[#12]

Also interested in MPX.

Posted: 9/4/2017 12:31:21 AM EDT

[#13]

Give up your secrets! I must know

Posted: 9/4/2017 8:45:32 PM EDT

[#14]

To all the MPX shooter here,

Keith Garcia shot the Lucas Oil PCC Championship match this past weekend and posted this on IG.

"I've learned that PCC is the hardest gun I've shot to keep running and avoid penalties. I do love shooting this MPX"

When asked "What other problems did you have with the MPX?"

He replied "You have to change all the small parts on the bolt"

The only small parts on the bolt is the extractor and the extractor pin.

I only have 900-1000 rounds on my MPX from Steel Challenge and USPSA matches and I've not had any issues.
I'm sure Keith has thousands of rounds thru his MPX so he would know more than I.

I wish he'd been more specific about what his issues were.

Hoping the OP can provide more specifics on the MPX.

Posted: 9/6/2017 10:00:06 AM EDT

[#15]

No extractor issues with our MPX machine guns. They seem to be tuned well from the factory.

Posted: 9/11/2017 11:11:37 AM EDT

[#16]

Quote History

Quoted:
When asked "What other problems did you have with the MPX?"

He replied "You have to change all the small parts on the bolt"

The only small parts on the bolt is the extractor and the extractor pin.

View Quote

I saw that and wondered if he was talking about the entire bolt carrier group. I'm on my 3rd firing pin on my MPX.

Posted: 9/11/2017 1:34:12 PM EDT

[#17]

3 firing pins? Geez how many rounds

Posted: 9/11/2017 10:25:27 PM EDT

[#18]

Quote History

Quoted:
3 firing pins? Geez how many rounds

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I broke the first one in the first 500 rounds. The second went a little after the 5K mark. Sig sent me a new bolt carrier with a spring on the firing pin and that one has been fine so far. I am running a Hiperfire 24c which may be contributing to the breakage.

Posted: 9/12/2017 12:53:13 PM EDT

[#19]

Bit of an OP let down here... :(

I'm pretty sure they don't have any, but I'd love to know about high round count B&T APC9.

Posted: 9/12/2017 6:29:19 PM EDT

[#20]

Quote History

Quoted:
I broke the first one in the first 500 rounds. The second went a little after the 5K mark. Sig sent me a new bolt carrier with a spring on the firing pin and that one has been fine so far. I am running a Hiperfire 24c which may be contributing to the breakage.

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Quoted:

Quoted:
3 firing pins? Geez how many rounds

I broke the first one in the first 500 rounds. The second went a little after the 5K mark. Sig sent me a new bolt carrier with a spring on the firing pin and that one has been fine so far. I am running a Hiperfire 24c which may be contributing to the breakage.

That's interesting because he first time I took my MPX apart to clean it I discovered there wasn't a firing pin spring in mine. The booklet clearly showed a spring for the firing pin.
My first thought was it was still in the bolt, then maybe that it had escaped and it didn't notice.
So after searching for something that didnt exist I called Sig and they told me the new MPX did not have a spring on the firing pin.
The pin was there for models sold to LE/MiL that insisted on it to meet their criteria.

Mine has been fine without it. Like I said I have approx 900-1000 rounds thru it so far.

Posted: 9/13/2017 8:47:13 AM EDT

[#21]

Quote History

Quoted:

That's interesting because he first time I took my MPX apart to clean it I discovered there wasn't a firing pin spring in mine. The booklet clearly showed a spring for the firing pin.
My first thought was it was still in the bolt, then maybe that it had escaped and it didn't notice.
So after searching for something that didnt exist I called Sig and they told me the new MPX did not have a spring on the firing pin.
The pin was there for models sold to LE/MiL that insisted on it to meet their criteria.

Mine has been fine without it. Like I said I have approx 900-1000 rounds thru it so far.

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Well that's BS, because my less than a month old MPX has a FP spring.

Posted: 9/13/2017 2:53:08 PM EDT

[#22]

Quote History

Quoted:
Well that's BS, because my less than a month old MPX has a FP spring.

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Quote History

Quoted:

Quoted:

That's interesting because he first time I took my MPX apart to clean it I discovered there wasn't a firing pin spring in mine. The booklet clearly showed a spring for the firing pin.
My first thought was it was still in the bolt, then maybe that it had escaped and it didn't notice.
So after searching for something that didnt exist I called Sig and they told me the new MPX did not have a spring on the firing pin.
The pin was there for models sold to LE/MiL that insisted on it to meet their criteria.

Mine has been fine without it. Like I said I have approx 900-1000 rounds thru it so far.

Well that's BS, because my less than a month old MPX has a FP spring.

Yep, I believe they updated the design to include the spring somewhere during the gen 2 production.

Posted: 9/13/2017 6:46:37 PM EDT

[#23]

Every MPX I've seen has a FP spring.

Posted: 9/13/2017 10:13:52 PM EDT

[#24]

I think somebody has forgotten something...............

Posted: 9/14/2017 1:15:01 AM EDT

[#25]

Quote History

Quoted:
Well that's BS, because my less than a month old MPX has a FP spring.

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Quote History

Quoted:

Quoted:

That's interesting because he first time I took my MPX apart to clean it I discovered there wasn't a firing pin spring in mine. The booklet clearly showed a spring for the firing pin.
My first thought was it was still in the bolt, then maybe that it had escaped and it didn't notice.
So after searching for something that didnt exist I called Sig and they told me the new MPX did not have a spring on the firing pin.
The pin was there for models sold to LE/MiL that insisted on it to meet their criteria.

Mine has been fine without it. Like I said I have approx 900-1000 rounds thru it so far.

Well that's BS, because my less than a month old MPX has a FP spring.

Just telling you what Sig told me.

ask them....and get back to us.

I've made the call already.

Sig Sauer Product Service (603) 610-3000 ext 1

I've had no issues without it. I've shot Steel Challenge and USPSA with it every month since I bought it.

Gen1 has the spring. Gen2 did not. Now the newest Gen2 have the spring.

Clear as mud?

Like I said call Sig.