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Posted: 10/3/2010 6:18:35 PM EDT
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So I found a deal on an A2 upper I couldn't pass up. It has the EK mark on it and that's about all I know until the postman brings it. I want an on-the-cheap build for a no frills truck gun and never built an A2 from the ground up before. I'm hoping just to find good deals on the EE and snatch them when I can and am wanting an old school CAR type rig. Can I use a 16" barrel or do I need to stick with a 20" one? What FSB will I need? Sorry about the stupid questions  Any help is appreciated, thank you. |
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EK is: EMCO/Kaiser. Sounds like a mil surplus M16A2 upper.
LMT is: No Forge Marks, but marked LMT or L is: LMT AF is: Alcoa Forge C AF is: Colt Alco Forge A (splintered) = Anchor Harvey Aluminum C MB is: Colt / Mueller Brass Cardinal’s head (stylized bird head) is: Cardinal Forge CH is: Colt Harvey Aluminum Crosshairs w/"AR" is: ArmaLite CK is: Colt / Kaiser Aluminum CM is: Colt / Martin Marietta D (stylized) 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 [FN] LM is: LAR / Martin Marietta M "diamond" is: Mueller Industries PA is: Capco? / Anchor Harvey [Elisco?] PM is: Capco? / Martin Marietta [Elisco (Armalite) for the Philippine military] Square (symbol) is: Brass Aluminum Crosshairs w/"AR" is: ArmaLite |
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Not a stupid question.
You can use any barrel you please as long as it is > 16" in total length. Most people stick a collapsable stock to a carbine (16") barrel but there is no rule that says you can't use a 20" barrel with a collapsable stock (as in the Canadian C7's) or a fixed stock with a shorter barrel. When buying the barrel, buy one that has the FSB already pinned on it, from your wording in the post it seems like pinning on a FSB may be a little much for you to handle... An A2 upper receiver should use a "non F-marked FSB" as "F-marked FSB's" are meant for flattop upper receivers. |
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Great. My main concern was that I didn't know if the A2 rear sights were specifically for a 20" or not. Also I had never delved into the F marked/non-F marked FSB before. I have taken them off and put them on rigs they started out on (FF installation) as well as replaced them with railed GB's. Looking at it again, I should have been more succinct in my initial question. Thanks for the replies! |
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