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Discussion Starter #1
Seeing some of the problems that people are facing with their ACR's I wanted to start a round count thread to gauge the reliability with the firearm. I have yet to buy my own ACR so I cannot add anything yet.
If you will, please post your round count with any issues at what number or if none please say so.
 

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Other than the recall and a loose barrel wrench screw, I have had no issues with my rifle. I am at 2800 rounds and had only 2 stove pipe stoppages which were easily cleared. I was shooting Federal XM193 at the time. Other than that, the rifle has been reliable and accurate.
 

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I don't believe the round count is going to necessarily help you because there is a possibility that BM has changed the size of the Gas Regulator "GR" port hole from the first rifles shipped/released. You might have to consider the serial number/date of manufacturer of those rifles as it relates to the round count - to see if the rifle is having any stoppage issues. I think it's fair to say that any issues that have been brought up previously in this forum have primarily stem in dealing with the GR if any at all.

So you would have to take into consideration, date of manuf, round count and if you want to get really specific what type of ammo, type of magazines, and are you using the S/U or new H/L GR. But, round count and date of manuf would get you started.

There is a new H/L "GR" that BM has available that might correct issues with earlier rifles, and then again there are those that have other/newer S/N's who have not had any issue at all. Other members here have been posting the size of their GR ports, and from I have been able to figure out, we have different dimensions gas ports on their GR's, which might support my theory.

I personally don't have a lot of data to support this but my belief is...all based on assumptions, is that BM has been tweaking the size of the GR port hole that drive the gas piston back from day one to find the sweat spot. I'm basing this, because there have been many that have NOT had any issues with several thousand rounds down range with newer S/N's. Then you have to consider are they firing .223's or just 5.56's...it's all about pressure and cycling of the bolt carrier group. So, until BM comes out with a press release, that's my story and I'm sticking to it. This one man's opinion.

I just got off the phone with BM customer service to see if I could get any conformation, one way or the other before I posted this reply...and nothing. I got through, but they have their own issues to deal with this month. BM closed their facility in Maine and moved the call center to NC (I believe) in any case they are all new to this weapon and have no history of this rifle from a learning curve respective, or who to go to with for information. I tried to confirm whether or not there have been any running changes, with negative results. All they ("they" meaning customer support people who are usually kept in the dark) have to say is that they will stand behind their product .... and honestly... I believe them.

I also passed on that they need to make it clear and debunk these stoppage issue concerns going forward if they want to increase sales for the ACR. They will only have happy current and future owners of this rifle if they are truthful. They only need to look at the XCR on how NOT to market the sale of a new rifle. I'm keeping my fingers crossed.

Having said all this, I believe the ACR to be an excellent rifle and one what can be easily fine tuned if there is an issues with stoppages or cycling. There are a lot of people on this forum that will concur who have LE and military to back this up.

They are some gremlins in dealing with this topic, but it will all be worked out. I hope this helps.
 

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Somewhere around 7-800 rounds I'd guess. No issues as far as reliability. Rifle shows normal wear and tear for an ACR with regards to brass deflector and charging handle track.
 

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Somewhere around 7-800 rounds I'd guess. No issues as far as reliability. Rifle shows normal wear and tear for an ACR with regards to brass deflector and charging handle track.
thx...how old is you rifle? 1,2,3xxx s/n series?
 

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Maybe 300 rounds of that was 193 spec, either the Federal bulk pack or Prvi, mostly during break-in. The rest has been reloads.
 

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DSM ...have you done anything special to clean the gas port? Soaking, blowing, Gun Scrubber or just wiping it? I'm planning on snake boring the barrel after every day at the range, and noting other than wiping carbon off parts to see if I can see a stoppage. I would prefer to have any issue while its still until warranty.
 

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No, not really. The piston I'll run under the wire brush in the grinding wheel, maybe zap the regulator in there too if I shot a lot that day or it was suppressed. Brush/patch out the gas block. That's about it.

We're thawing out slowly here and I've got the itch to get out on the range soon. The ACR will be getting put through its paces for sure.
 

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I'm waiting to get my Elcan in a couple of weeks and then I'll be putting 100's down range to see what gives. I'll be doing vids as well
 

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Discussion Starter #12
No, not really. The piston I'll run under the wire brush in the grinding wheel, maybe zap the regulator in there too if I shot a lot that day or it was suppressed. Brush/patch out the gas block. That's about it.

We're thawing out slowly here and I've got the itch to get out on the range soon. The ACR will be getting put through its paces for sure.
So the ACR piston and gas block assembly is not self cleaning? It doesn't make sense to need to clean these parts. My LWRC rifles pistons and gas block assemblies are self scraping, clean themselves and I never touch them with thousands of rounds through them.
 

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The piston has a carbon scraping feature, yes. Not unlike the carbon cutters on an M60 op rod. I'd imagine it'd be a lot of shooting to totally gum that thing up. I like to keep it clean though so I'm not climbing the Big Rock Carbon Mountain later on. Just a habit. Maybe it's too ingrained into me I guess. The old NCO in me says, "If you shoot it, you clean it."
 

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700 rounds 5.56 and not a single malfunction other than that the PMAG that came with it only locks the bolt to the rear about half the time. Never any problems with my military issued mags though.
 

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Approx 315 rounds of 5.56/.223 (minor) and zero malfunctions.

Did find that to dynamically "seat" the magazine like that of an AR15 didn't work out too well.

AR15: slam that mag into the well and jerk to assure purchase
ACR: slide mag into the well then give a light pull to assure purchase, then activate bolt release
(otherwise the mag will just slide right out)
 

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Got about 750 rounds through mine. Only had one issue that was ammo related
Had a factory primer get popped out and stop the bolt from closing on the next round.
 

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Just hit 1500 rounds with a wide variety of ammo manufacturers. Most have been Lake City M855 and American Federal XM193, but I have done 200 rnds of Wolf, 100 rnds shoddy 55g home-reloads, and 100 loose rnds of Fiocchi in a plastic bag that I bought from a guy for $20.

I can't recall if I've had any jams/misfires/etc at all, other than all the touble I've had which turned out to be problems with PMags.

Other than one or two thourough cleanings back in Feb, I just run a boresnake, and check the gas plug.

I love this gun, and my only regret is that it took me so long to learn to keep my thumb lower when I drop the bolt release, and that I didn't buy two
 

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I have approx 400-600 rounds through my old 16" barrel, and about 600 through my 10.5

No problems whatsoever running generally pmc, but do shoot Remington, wolf and 5.56 if needed

Serial number is 19xx
 

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Add another 500+ rounds to my count from yesterday. It was a perfect day out at the range (I took some vacation days, it's been quiet at work). All my own recipe, 62gr plinking rounds. Zero issues. One of the last mags I shot was suppressed as I wanted to see if having my barrel cut back would change anything. My first few times shooting with a can in the "S" setting (old, angled regulator) was spotty. I could tell it was cycling slower but it fed fine, no stoppages. Wanted to do more but there was a T-Storm rolling in and I didn't want to be hanging out under the metal canopy waiting for that thing to cool down enough to pack it up.
 
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