First AR build complete... I have a few questions

[5ohguy]

So I just finished building my first AR.

• JD Machine lower
• RRA lower parts kit
• Hogue grip
• Magpul CTR stock
• CMMG upper
  • 14.5" chrome lined barrel and bore
  • Pinned and welded flash hider for 16" overall length
  • 1/7 twist
  • M16 bolt carrier
• MAGPUL MBUS rear flip up sight

Now for a crappy iphone picture:



Now a couple questions.

I have noticed my MBUS has about .020" of play forward and back. None left and right. Does anyone run these sights and if so, is this something I should be concerned about?

Also I'm interested in a free float rail to support a foregrip and my Surefire G2 light. I was looking at the DD Omega 7.0 the other day at Parallax Tactical and was impressed, but it's so pricey. I might just have to suck it up and buy it unless someone could suggest a good carbine length rail...

Thanks.

[djleisure]

I have a couple MBUS and haven't noticed any play in mine. I can't imagine that little amount of forward-and-back movement would effect the POI very much at all. I wouldn't worry about it right now, but if you get out there with it and it's noticeable then I would suggest upgrading to a metal BUIS (like Troy, MI, YHM, etc.)

As far as the rail question, I would absolutely, 100% recommend the DD Omega 7.0 rail. No other rail comes close to the simple drop-in installation and rock-solid performance - all in a super-light package - simply amazing design on that rail. I see them in the used section here for $200-$220, usually not even installed by the previous owner or gently used. Either way, get the DD Omega 7.0 you WILL NOT be sorry.

[fast318]

I have the rail below and am very happy with it, can't beat the price for a free floating rail.

http://www.bravocompanyusa.com/YHM-Lightweight-Tactical-Free-Float-Carbine-p/yhm-9631%20ff%20carbine.htm

[orangeglo]

I do not have the mbus so i cant comment.

But, I do have a 7" Daniel Defense M4 rail and I love it! DD rails are highly recommended.

[ZombieKiller]

You want this one...

http://www.bravocompanyusa.com/Vltor-CASV-EL-Carbine-Handguard-p/casv-el%20green.htm

[5ohguy]

It turns out that the screw that secures the sight was in the wrong way. I added some lock tight, flipped the screw, and now the sight is rock solid.

Thanks for the advice everyone.

[adamsreeftank]

Since your hider is pinned, you will not be able to remove your front sight to install the rail. That will limit your choices to a two-piece design that clamps onto the barrel nut.

Oh, and nice looking rifle. I like the KISS type rifles and would leave it as is, unless you really need a light.


-Edit, I just looked at the Omega, and it looks like you know what you are doing.

[paladin4415]

May I ask why you want a "free float" rail system? With a 14.5", chrome lined barrel, a free float rail won't really help accuracy much at all. The DD Omega is a great rail, and if you really want free float get the DD. Otherwise just get any two piece rail from a quality manufacturer that fits your hands and that you like the look of.

[zman]

Nice KISS build!


For the handguard you can go with an MOE handguard with the new Magpul rails add-on. This setup won't break the bank

http://www.riflegear.com/p-484-magpul-moe-hand-guards-carbine-length.aspx

http://www.riflegear.com/p-695-magpul-moe-polymer-rail-sections.aspx

[NorCalSJ]

Don't settle for second best, buy the DD Omega 7.0 and don't look back....

[Peter W Bush]

Don't settle for second best, buy the DD Omega 7.0 and don't look back....

Why is the Omega 7.0 the best

[djleisure]

Why is the Omega 7.0 the best

Extremely lightweight, easy install, free float, continuous rail, rock solid, slim profile, nuff said.

[be1498]

Extremely lightweight, easy install, free float, continuous rail, rock solid, slim profile, nuff said.

Yup, I put an Omega 9.0 on my midlength, took me all of ten minutes to install, including reading the instructions. My son was so impressed that he got one too!

[NorCalSJ]

Thanks djleisure, you bet me to it.....

[Roseville Ranger]

DAMN YOU ALL! i was gonna go cheaper on a rail for mine now i feel like i better spend some cash on the DD rail i have been starring at.