Please help me build my dream A.R. 15

[WinchesterM1]

Please help me build my dream AR. I am looking to buy or build a lightweight A.R. 15. I am wanting it to come in at around 5 pounds, have a 18 inch barrel, with a carbine length gas system,1/12 twist barrel in 5.56/223. I want the 1/12 twist barrel because I plan on shooting the NOE 60 grain bullet and it will have an adjustable gas block so what do you think any advice?

[Texas by God]

I would suggest starting with a CavArms type lower receiver. All one piece and eliminates the separate pistol grip and buffer tube. They aren't pretty- but I've never seen a pretty AR15 anyway.......
Mine weighs about 6 pounds as shown.

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[WinchesterM1]

I should have mentioned, I have a magnesium lower already!!

[Texas by God]

Well that's very cool. I take Magnesium every day! So this isn't a budget build
I've seen skeleton bolt carriers and pencil profile barrels. If every ounce counts, a slickside upper will help. Please keep us posted as you build it.

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[M-Tecs]

They did this one for under 5 pounds using a mid-length gas system. I encourage using a mid-length for 16" and over.

[Gtek]

^^^^^^^^^ 18" Mid-Gas with an adjustable block for me times a few. M4 bottoms with H3's and rifle bottom configs, very soft shooters can be achieved.

[WinchesterM1]

Well I got my barrel in it’s a brownells A1 repro with a 1/12 twist 20” rifle length barrel

Hopefully I will beable to shoot these NOE 224-62grn around 22-2300 FPS with some sort of accuracy

[stubshaft]

I just ordered a Slickside Upper and a NBS lightweight nickle boron BCG from AR-15 Discounts. Total with a basic charging handle was under $200. I could have gone lighter, but then you move into the realm of cubic dollars! The last build (223 Wylde) that I did, was with a Hanson pencil barrel. It comes in at 6 lbs. 2 oz. with a red dot and shoots .75 moa on average. I think the best was a .287@ 100 yds.

I have no affiliation with the seller.

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[Larry Gibson]

Well I got my barrel in it’s a brownells A1 repro with a 1/12 twist 20” rifle length barrel

Hopefully I will beable to shoot these NOE 224-62grn around 22-2300 FPS with some sort of accuracy

You should be able to achieve that with the 12" twist. My 12" twist AR is a contract milspec M16A1 barrel on a M16 upper. The 1 moa dot Ecotech may not be the best for accuracy, especially at 200 yards, but it works for me.



Here's 10 shot groups at 100 and 200 yards with a cast load at 2250 fps. Not the NOE bullet but will give an idea what, with your barrel and a scope, can be done.

[almar]

i dont know if you know the company or not, but "precision firearms" has some very nice top end AR parts. Uppers, lowers, barrels or fully custom complete rifles.
https://www.precisionfirearms.com/

When i was more into AR's, I assembled a higher end 6.5 grendel with an upper and a lower from from there. Triggertech diamond trigger, bartlein barrel, JP enterprises buffer, ultradyne flip up sights, with a IOR recon scope on spuhr mount. They have some Videos at shot show on you tube.

here is one:
https://www.youtube.com/watch?v=jjz_BCO5Hm8

I talked to mike a few times on the phone, very good with his customers and he is hell bent on getting you perfection. at least he was with my order.