I have a BCM carbine upper that doesn't have a particularly high round count (Under 3k rounds I think) that has eaten a couple sets of gas rings now too, the first set was worn out after about 500 rounds. As with yours, it never caused any malfs but was just something I discovered during routine maintenance.
In no way do I make any money from anyone related to the firearms industry.
"I have never heard anyone say after a firefight that I wish that I had not taken so much ammo.", ME
"Texas can make it without the United States, but the United States can't make it without Texas !", General Sam Houston
Still on my original rings on my slotty Colt. Dude who taught Colt armorer course said it really isn’t something to get too anal about. But depending on volume of use and carbon; at some point they may need changing. Its not hard and no they don’t need to be staggered but I do it anyways because reasons.
I had to do that to one upper I got that was previously used on a FA lower. Tube too. Easy peasy.
If you need gas rings then G&R has what you need:
https://www.gandrtactical.com/BCM-Ga...s-3_p_105.html
Cheap enough to keep a few sets on hand.
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“The greatest conspiracy theory is the notion that your government cares about you”- unknown.
After 15 years, this is what the gas rings looked like, on the LMT enhanced bolt in my test gun. 1 of the 3 rings is missing, 1 is severely deformed (actually fell apart upon examination), which left 1 well worn ring on the bolt. When the bolt dropped into the carrier, there was hardly any resistance.
And it still functioned.
I replaced the rings of course, but it goes to show you the brilliance of the original 3 separate/independent ring design, it offers the most fail safe and redundancy. I would not use a one piece, spiral gas ring. The TDP spec 3 ring setup won't "unspool", it's not something that needs to be "improved" which often does the opposite.
We (FCD) were looking at possibly making improved gas rings, but given how reliable and durable the 3 ring design is, the proposed thicker ring (we'd have 2, not 3) would be more durable than the thinner TDP spec ring, but we'd give up the fail safe provided by the extra ring. Not a compelling reason to mess with the 3 ring design.
IMG_0285.jpg
Last edited by Duffy; 09-20-19 at 10:22.
Roger Wang
Forward Controls Design
Simplicity is the sign of truth
Every time I shoot my rifles I clean them, and inspect the components. If the gas rings look damaged or too worn out, I'll replace them. But I don't replace them on a set interval.
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