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Posted: 11/12/2007 6:24:20 PM EDT
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I have always been a fan of the A1 sights,used them in the Marines. I bought an A2 upper early this year and just traded it for a Sig P229. Now the next Ar I want to build is a flat top 16". I have been looking at going with a gas block instead of a front sight base. I have no knowledge about gas blocks...so here are a couple questions: 1) can a gas block be installed on a rifle that has a FSB? 2) can I do it myself? |
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1: yes 2: sure can, just got to have the right tools www.ar15.com/forums/topic.html?b=3&f=4&t=226782 basically, you remove the 2 FSB pins (some are tapered and there are some tricks to help remove the tougher ones); then, get whatever brand gas block you want, slip it on, align the gas port holes, and tighten the set screws (of course, remove, and reinstall the gas tube and pin) |
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Thanks guys. I may order the complete upper with gas block installed. But just in case I don't, I was wanting the info you provided,should I decide to get an upper with a FSB,should later on if I wanted to go gas block. The more I look at the rifles with the gas blocks,the more I like tem,especially the Vltor low profile. Are there any other blocks that you can suggest? |
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If you use the brownells orange block and their taper pin starter it makes getting the FSB off a piece of cake. orange block Order brownells taper pin starter (its just a starret 3/32 nail set punch), brownells part number 827-530-320 This website is great, step by step instructions: http://www.varminthunters.com/ar15tech/freefloat/ar15freefloat.html |
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I have found the above Brownell's orange block to not be a very good fit. I can't remember what dimensions they are not sizing correctly, but there's considerable modification necessary to get proper support to the barrel. My advice is to save $$ and just work up something yourself using scrap lumber. Can I get a second on this? |
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Get ahold of Pete at Legal Transfers. He is an ARFCOM dealer. He is selling this COMPLETE upper for @ $440.00 shipped to your front door like pizza:  Speak with him about changing the FSB out for a GB. Super nice guy on the phone. The barrel has a 1-9" twist and is chrome-lined. Here is his thread in the EE: www.ar15.com/forums/topic.html?b=7&f=22&t=344444 Best to you. |
+1. I like them too. Have to get one on the SBR I am getting ready to get. |
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