This post is one of those things that keeps me on M4 Carbine.
Let those who are fond of blaming and finding fault, while they sit safely at home, ask, ‘Why did you not do thus and so?’I wish they were on this voyage; I well believe that another voyage of a different kind awaits them.”
Christopher Columbus
Man, the more i learn and research the 55x the more valuable this thread gets.
Josh, is the 553 BCG in the pics U.S. made? Also, is the little "curved" rail on the 552 BCG indicate that it's a FA carrier unlike the straight 553 carrier?
Ok thanks alot Josh
Josh: Is there a way to tell if a 556 is using a Swiss bolt??? I ask because my uncles early ER definitely has the swiss gas block with the proof marks and different finish but i told him a while ago that his BCG was US made. The reason i thought that is because there was no serial number or any marks whatsoever but it turns out that may not be an indicator.
The bolt itself is black like my US bolt (slightly different shade) and its finished all the way down to the end (firing pin) instead of just the "head" being finished like ive seen on serialized Swiss bolts. Also, the carrier is black in color almost like its been nitrided. My carrier is silver.
Again, its not really a big issue. I would just like to be able to identify it correctly and am wondering if there are any tell-tale signs of its origin. (oh, it is better machined than mine but nothing thats strikingly different to my novice eye. Theres a 90 degree corner on my bolt head that has a little bit of overflow(?) that i can catch my fingernail on. His has none of that and is smooth)
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