Let's talk 6.8SPC

[TXCOONDOG]

as stated, the 6.8 sweet spot is a 16" barrel and you will not gain much in a 18.

check out the 6.8 forum

 

[Lights]

I am just stuck on 18" barrels. I like them better because I believe that balance out the AR's nicer. Just my choice of feel that's all.

I ordered a 18" SPR one from Bison along with a bolt and carrier.

 

[kymailman98]

My 6.8 is a rifle my late brother built and gave me. It is a 20 inch Bison upper, intermediate length gas tube, rifle length YH forearm, YH low profile gas block, Devang linear compensator, Young bolt carrier with IT super bolt. It sits on a CMMG lower, which has a RRA two stage trigger. This thing will shoot the lights out using a Sierra 110 grain Pro Hunter handload. It's a little on the heavy side, but it shoots so good it really doesn't matter. I've killed a couple of deer with it, although it's not really my first choice as a deer rifle. I have found that the 20 inch barrel chronographs an average of 2775 fps.