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Wow...simply wow. You guys are amazing! You tear apart every other Piston system on the planet, but since it's colt it seems like we have a small band wagon jumping ship "oh it's not that bad, I think it will pan out ok" WTF!
I'm not mad it's just funny to mematter of fact I have always liked the piston system idea...the DI has been perfected of 40 years. And now we'll spend the next 40 perfecting the piston platform Stoner.
On the flip...I really do like it. And knowing Colt, I'll bet the price point isn't ignorantly high!
Good luck keeping em' on the shelf Grant!
Thanks for the post Grant. Is this CA legal?
BTW Grant, I got my VCAS, thanks.
Ray
Looks nice... Grant what would it take to make this gun NJ legal, pinned stock, and pinned comp instead of FH, etc? If the gun itself and these mods aren't too much I might be in the market for one...
Ken
OK, I'll bite: why does the bolt have gas rings if its not actually using the regular gas system?
Though I suppose they could assist in keeping bolt alignment, otherwise they are just mechanical drag.
Maybe you're right, perhaps there is an element of Colt fanboyishness going on here. But in defense of that, I can name about 12 different companies that produce piston ARs. The majority have been producing rifles for less than a decade. If there is going to be any company I would trust to develop an acceptable piston AR it would have to be Colt. And that isn't just me, I would think most who use their carbines would feel the same way.
But that isn't to say the Colt design isn't above a certain degree of scrutiny. That's why there are being asked a lot of questions about the design of the operating system. For example, other piston designs have adopted a one piece carrier but the 6940P uses the standard carrier, why? I would assume they have a logical reason for it, but maybe not, maybe it was just a cost saving measure to insure a higher degree of parts commonality.
Regardless, it's a Colt.
Last edited by amd5007; 03-14-12 at 00:28.
I understand that it's preferable to have a very hardened gas key if it's going to be whacked by an op-rod repeatedly...but I don't see how hardness will decrease the probability of the gas key coming lose? Won't the gas-key on the piston gun take more of beating than the gas key from a DI carbine? Just seems to me like it would be MORE important for this rifle to have a staked gas key...that, or a one-piece carrier.
As for the screw in the upper receiver to prevent cam-pin wear...I know that it happens a bit more on piston uppers than DI uppers...but are there any associated problems with cam-pin wear? I've never heard of that causing operational issues in an way...for any rifle.
One more questions...and I apologize if it's been stated already, but does this Colt have an adjustable gas setting for suppressed shooting?
Thanks for the pics and info Grant!
Last edited by MikeCLeonard; 03-14-12 at 01:14.
I would be interested in checking one out. My major gripe is that damn rail.
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