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Posted: 3/24/2011 7:14:54 PM EDT
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i been seeing some uppers with a small square instead of a A or the Keyhole.
any ideas to who makes these ? thanks |
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Quoted:
i been seeing some uppers with a small square instead of a A or the Keyhole. any ideas to who makes these ? thanks Square forge marking are raw forging blanks from Brass Aluminum Forging Enterprises. Various AR manufacturers does the final machining, finishing, and assembles them. My new Colt SP6920 Sporter carbine that I bought a week ago and my other 6721 carbine I got last year had the square forge markings on the detachable carry handles. |
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Time for this maybe.
Splintered A is: Anchor Harvey Key Hole is: Cerro Forge F keyhole is: FNMI / Cerro Forge Offset Square is: Brass Aluminum Forging LMT is: No Forge Marks, but marked LMT or L is: LMT AF is: Alcoa Forge C AF is: Colt Alco Forge C MB is: Colt / Mueller Brass Weird looking thing is: Cardinal Forge CH is: Colt Harvey Aluminum Crosshairs w/"AR" is: ArmaLite CK is: Colt / Kaiser Aluminum CM is: Colt / Martin Marietta D is: Diemaco DK is: Diemaco / Kaiser Aluminum E is: Emco EK is: EMCO/Kaiser E MB is: EMCO/Mueller Brass FA is: FNMI / Anchor Harvey FK is: FNMI / Kaiser Aluminum FM is: FN/Martin Marietta FMB is: FNMI / Mueller Brass LK is: LAR / Kaiser Aluminum LM is: LAR / Martin Marietta M "diamond" is: Mueller Industries PA is: Capco / Anchor Harvey PM is: Capco / Martin Marietta |
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Quoted:
ok cool, i just don't want no junk upper... I'd say that any upper with a forge mark is probably going to be at least "decent." But the raw forging is only the beginning-it's whomever did the machining that's the key to whether a receiver is "junk" or not. And you can't always (or even often) figure out who did that machining. Buying from a reputable source is about the only way to protect yourself from "junk." |
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