Today Ups delivered my 18" 1in9" 6x45 barrel Just wish the gas block and upper were ready. the plan is to replace the 20" Walther bull on the Firebird billet upper with 24" 6mm LBC 1 in 9" This time it will be bedded. Then the new 6x45 will go on the Rguns upper .I ended up with a new Spikes stripped lower the usual Rock River NM trigger lower kit add an Ergo Grip, Nordic components muzzle brake and Nordic or Midwest (Todd Jarret) free float, and I think an adjustable gas block. it is a mid length system so it will be over gassed. So now its just money.The dies are in route and mid weight 6mm bullets supplies are drying up the 6mm LBC and my restocked 243win Rem 700 have done some damage to my component inventory. maybe I'll start with 70gr hpbt Sierra's
Paul PS.. my wife now says she shares me with two women Sadie (Sadie's a New Mexican restaurant in ABQ.) and Sierra (bullets )
Congratulations on getting your barrel in. I ordered the same barrel type. Still have some time to wait for mine. The adjustable gas block sounds interesting. Being new to the AR platform I have not thought about one. Please post some pictures of your build. Good luck with your project.