[ARCHIVED THREAD] - Question about gas block

Posted: 11/23/2012 6:06:32 PM EDT

I'm building my first AR and have a question. I'm building a 16" mid length and already have purchased a 9" Troy Alpha Battle rail. Do I need a low profile gas block with that configuration?

I haven't decided yet if I want to change to an 11" rail, in which I know I would need a low profile. I'm thinking for now though of doing the 9" and possibly a fixed front sight on the gas block

Thanks

Posted: 11/23/2012 8:16:50 PM EDT

[#1]

No need for a low pro gas block with that setup. 9" is the correct length rail for a middy and a FSP.

Posted: 11/24/2012 10:02:42 AM EDT

[#2]

Great, that's what I was thinking, I appreciate the confirmation.

Posted: 12/10/2012 5:48:07 PM EDT

[#3]

One more question- what if I went with a carbine profile instead of midlength- would I need a low profile block then if using a 9" free float handguard?

Thanks

Posted: 12/10/2012 6:01:58 PM EDT

[#4]

Yes
A carbine handguard is 7", so any handguard longer than that on a carbine gas barrel, needs a low profile gas block.

Posted: 12/13/2012 6:18:36 AM EDT

[#5]

I'm thinking of getting a gas block with the picatinny rail on it but was wondering if these rails typically flush up with something like the 9" Troy Alpha Battle Rail? More for aesthetic reasons I don't want a gap between the rail on my handguard and the rail on the gas block-
These are the 2 I'm thinking of - if anyone knows if these would flush up or not?

http://www.bravocompanyusa.com/ProductDetails.asp?ProductCode=PRI+05-075-04+Gas+Block&CartID=3
http://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=375 (the gas block sight base model)

Thanks

[ARCHIVED THREAD] - Question about gas block

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[ARCHIVED THREAD] - Question about gas block

[ARCHIVED THREAD] - Question about gas block