Alright guys, got my lower built and now need to start looking for a upper. I want a low profile type gas block, should I look for an upper with that already installed or grab a good deal and have it changed out locally?

Also what are some pros/cons to a 16" barrel vs 14.5" (14.7") with pinned flash suppressor?

I'll hang up and listen

This post was edited on 3/17/13 at 1:54 pm

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Posted by CP3

Baton Rouge

Member since Sep 2009

7416 posts

Posted on 3/17/13 at 4:38 pm to GreatBrandino

If I were getting a carbine I'd go the 14.5" route.

For mid length go with the 16".

But honestly you should just pick which one you think looks better. I doubt you would be able to see a difference in performance.

And if you plan on ever changing your flash hider/compensator then definitely go with the 16"

As far as the gas block goes, if you can't find an upper that already has a low profile one, they only cost like $30 and they aren't too hard to swap out.

This post was edited on 3/17/13 at 4:41 pm

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Posted by kengel2

Team Gun

Member since Mar 2004

30903 posts

Posted on 3/17/13 at 5:00 pm to GreatBrandino

Unless you want a replica M4, go for the 16".

If you want a shorter barrel, just build a SBR.

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Posted by Ice Cream Sammich

Baton Rouge

Member since Apr 2010

10116 posts

Posted on 3/17/13 at 6:27 pm to GreatBrandino

You wont notice the difference between the 14.5" and the 16". That is both in length, weight, performance, and looks. I suggest getting the 16" for the simple fact that you can swap out the flash hinder if you want (and you might, MIGHT get 50 more FPS).

I buy all of my uppers complete. I dont worry about building those mainly because they have always been easy to find exactly what I wanted. Now, with this climate, I may have to start piecing some together. Changing out a gas block is easy as pie. Dont let that make the decision for you.

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