Need Help Selecting a Barrel

[CoryCop25]

Why not a Centurion Barrel?

It's a carbine gas system, not a middy.

[Tigereye]

My bad. I was thinking of the Recce 14.5" but I missed you're using the MRO.

[CoryCop25]

No worries.
I'm still open to anything.
This rifle could potentially be a patrol rifle for work if they approve the SOP I wrote for them and allow personal owned patrol rifles. That's why I want to keep it light, accurate and simple.

[Pappabear]

I have received all of my items from the great Centurion Group Buy. I have some parts already purchased but for the first time ever, I am stuck on a barrel for this build.

Hers is what I have planned or already have for this build....

Centurion Lower, Upper receiver and 13" CMR handguard.
Centurion BCG
Colt Lower parts kit and Receiver Extension
Geissele Super Tricon Trigger
Geissele Airborne Charging Handle
BCM Stock and Grip
DD Fixed front sight
KAC rear sight
Trijicon MRO on Sphur mount
Dead Air Sandman K suppressor and mount...

I have no clue what barrel to put on this build. I am leaning heavily toward a 14.5" middy of some type. I was also kicking around a Noveske Afghan barrel but I don't know if i want a stainless steel barrel that will be suppressed most of the time.

What are your thoughts?
Price isn't much of a concern.
I'd like to keep it light but the barrel must also support the suppressor without crazy POI shifts.

I have an Noveske Afghan and like it very much. I run it suppressed 100% of the time. Ill take it out tomorrow and see how gassy it is. I don't remember it being gassy, but Ill check. It has an ACOG so Ill try some groups for shits and giggles and see how can do.

PB

[26 Inf]

First off, I readily admit I am a Green Mountain Barrel fanboi.

Keeping this mind from your OP:

Price isn't much of a concern.
I'd like to keep it light but the barrel must also support the suppressor without crazy POI shifts.

This is a 14.5 mid-length: http://www.gmriflebarrel.com/gm-m19-...6mm-midlength/ $177.00 5.56 mm, 1:7 twist, 14.5", 4150 steel, M4 Replacement barrel for mid length gas system, chrome line bore and chamber, button rifled, stress relieved, air gauged, drilled gas port hole, assembled with M4 extension, muzzle thread 1/2 x 28.

Although I don't have this exact barrel, I do have it's 16 mid-length cousin: http://www.gmriflebarrel.com/gm-m8-1...ystem-5-56-mm/

If you look at the pictures the profiles are the same except the 14.5 only has a little over 3.1 inches of the final profile versus a little over 4.6 for the 16 inch. I really haven't measured POI shift, I get on 2/3 IPSC plates at 200 yards with and without suppressor on this rifle.

It weighs 1.9 pounds so I imagine the 14.5 would go at about 1.6 or 1.7. It is a 1:8 twist so I can't speak to the 14.5's 1:7 twist accuracy.

I run the 10.5 inch little brother of these on my SBR - http://www.gmriflebarrel.com/gm-m26-...56mm-nato-1-7/ It is also a 1:7 and weighs 1.35 pounds, so I reckon 1.7 would be a close guess for the 14.5. (ETA - this is my HD rifle, I generally shoot it suppressed - Silencerco Omega - and honestly, I couldn't speak to poi shift with and without suppressor.

I'm really happy with the accuracy of all the GM barrels I have used - probably around a dozen.

Hope this helps.

[vicious_cb]

I have an Noveske Afghan and like it very much. I run it suppressed 100% of the time. Ill take it out tomorrow and see how gassy it is. I don't remember it being gassy, but Ill check. It has an ACOG so Ill try some groups for shits and giggles and see how can do.

PB

Current Noveske midlengths are on the gassy side of port sizes, they run 0.081-0.082" on both 14.5" and 16". Faxon is about the same 0.080" for midlenth.

[Pappabear]

I shot my Noveske Afghan today and it shot lights out. Mark shot a .5 MOA group with out 62 grain BTHP and a sub MOA group with 77grain Nosler OTM's. Should be the other way around but fatigue is fatigue. I ran it out to 750 yards no problem starting at 100 yards.

Great barrel , buy with confidence. It wasn't too gassy either with a Sig Ti 556 QD can.

Build

Mur Upper
Vltor A5 buffer
Noveske barrel
Geiselle rail
Sig QD Ti 556 can
BCM lower SSA trigger bla bla bla

[vicious_cb]

I shot my Noveske Afghan today and it shot lights out. Mark shot a .5 MOA group with out 62 grain BTHP and a sub MOA group with 77grain Nosler OTM's. Should be the other way around but fatigue is fatigue. I ran it out to 750 yards no problem starting at 100 yards.

Great barrel , buy with confidence. It wasn't too gassy either with a Sig Ti 556 QD can.

Build

Mur Upper
Vltor A5 buffer
Noveske barrel
Geiselle rail
Sig QD Ti 556 can
BCM lower SSA trigger bla bla bla

What year is your noveske from?

[Iraqgunz]

Personally I would skip 14.5" and go with a SIONICS 16" Midlength barrel.

[CoryCop25]

I don't see a 15" midlength barrel on the Sionics site....