Best Low Profile Gas Block For This AR Build?

[WinThePennant]

I am building an AR-15 from this model: http://www.itstactical.com/series/diy-ar-15-build/

I'd like to deviate just a bit in that I want a flip sight on the front (Magpul MBUS).

What would be the best low profile gas block for this build? I will be using a Bravo Company 14.5 barrel, and a Daniels Defense Lite Rail.

Thanks!!!!

 

[Sam Cade]

What would be the best low profile gas block for this build?

Simply cutting the front sight down will give you the strongest possible and best fitting low profile gas block.


If it was me, I would leave the front sight alone. Using a MBUS isn't going to enhance the shootability of the rifle.

 

[WinThePennant]

There is no front sight to leave alone since it has not been assembled. In fact, I won't be buying a 'traditional' front sight. This is a build, and I want my AR to have a certain look.

I'm looking for advice on a low profile gas block.

Thanks!!!

 

[ethicalrelic]

Which gas block will work best depends on how you want to affix it to the barrel and whether or not you've got a pinned front sight post already affixed, IMO. If you do, then like Sam says, I would chop it down to fit under the rail. If you just have a smooth barrel with a gas hole in it, then you would want to either get a clamp gas block, like the vltor low profile clamp version, or get someone to pin it or drill a divot for a gas block that uses a set screw. You could do it yourself, if you've got the tools and patience, I suppose.

When I switched from a carbine to mid-length gas system, I just had the place I ordered the barrel from put a divot in the barrel for a set screw, then used rocksett on it. I've heard some people's thoughts that everything should be pinned, and I think that's probably true in the long term, but my gas block is covered completely by the rail, so impact shouldn't be a problem. I'll pin it when I get the tools to do so myself...

 

[Mot45acp]

Vltor

 

[ethicalrelic]

Yeah- I like my Vltor. Its aesthetics are so nice, though, that it seems like a shame to hide it under a rail.

 

[rbernie]

I like the EGW design; it's light, relatively inexpensive, and it positively clamps on with two cross-bolts so that it's not dependent upon set screws.

I've used more than a dozen of them in my builds with complete satisfaction.

 

[Ramone]

I am not sure if it is what you are asking, but You can't use the MBUIS on a gas block- it is too short (it correct height to mount on a rail in the hand guard), and it will melt on the gas block (it's plastic)

If you want to go that way, I like the Vltor as well.

That said, I'd look at one of the integral Gas Block/ folding sight set ups, like this one:

http://www.midwayusa.com/product/25...andard-barrel-750-inside-diameter-steel-matte

 

[gotigers]

vltor, daniel defense, etc. Any well known brand gas block will be fine. Midway had some under $40 last i looked.

 

[rbernie]

Since most any railed gas blocks available are not set up to be pinned onto the barrel, I prefer low-pro gas blocks under a long anti-rotation float tube with forearm-mounted BUIS.