Who makes the best complete 6.8 spc upper?

Wilson Combat makes a nice one. Not sure who is "best" but you could take a poll over at 68Forums.

Look for a 1/11 or slower twist and a SPC II chamber.

I have a Stag that I'm very happy with. Plan on deer hunting with it this fall.

The best upper is what shoots to your expectations.

I've built two thus far for my own use, and helped build another one that a friend still shoots to this day.

So far, the two that I built, using two different manufacturer's barrels, both shot sub .50MOA at 100 yards. That has a lot to do with the triggers, and the break-in, and loads developed.

I do not reload, at this point in time in my life, but the factory loads that have been developed by SSA are top notch, and will shoot lights out.

The two uppers I built were as follows:

16" White Oak Armament (Shilen Blank) with 1/11 twist, 4 groove, SPCII chamber. Great little barrel.

18" Wilson Combat 6.8x43 barrel (Shilen Blank) with 1/11 twist, 4 groove, SPCII Chamber. Fluted.

The other was built off of a Bison Armory Barrel, 16", which is an ER Shaw Blank. 1/11 Twist, 4 groove. SPCII Chamber.

The key here obviously is the SPCII Chamber. 4 or 5 groove is good, ARPerformance has some that are 1/11.25" with 5grooves, and many users are touting a sub MOA accuracy as well with factory ammo. Sam308 suggested Stag, and they are top notch as well. I think your best bet is to do a little research as to what you want to do with it. 1/12 and 1/11 will operate at higher tolerances of pressure safer than the 1/10 twists. This has been proven with the fellas who own and reload the 6.8x43 on the 68forums. YMMV... good luck, and keep us updated!

Noveske makes nice rifles and uppers. Also check Barrett rifles for uppers in several calibers.

AR performance or bison /thread

You get all the specs and performance at very reasonable prices look no further.

Wilson Combat. Nothing leaves their shop without EXTREME inspection, fitting, and attention to detail. High price, but high quality.

My vote would be to build your own upper using a WOA, ARP, or Noveske barrel.

You want an SPC II chamber, twist of 1:11 or slower, and 3R, 4R or 6R rifling. The WOA 6 groove barrel is also extremely consistent in internal diameter and mine seems to be as good as either my Wilson or ARP.

These will give you the highest velocities at the lowest pressures.

AR Performance has a great reputation for complete uppers.

quote:

Originally posted by ricky_arthur:
AR performance or bison /thread

You get all the specs and performance at very reasonable prices look no further.

+1 Absolutely the bomb!