6mm ARC or ?

[Swinehunt74]

I have 18" 6x45 upper for sale with approx 300 rds loaded 75gr-100gr. AR Stoner barrel 5R stainless. Less than 400 rd count thru tube. Free float handguard. $850 with ammo. Shoots .75 all day. PM me or text 2103671610 and will send pics with established commo via text.....

 

[dwinmeade]

I have a 6x45 for sale here's my ad/post...

SOLD/EXPIRED - 6x45 = mild 243 velocities in an AR-15 platform...

With a simple barrel change, your AR-223 becomes a mild 243 in an AR-15 platform. Everything remains the same...upper, lower, bolt head, magazines, etc. Just resize your current 223 brass to 6x45 , load and shoot. The 6x45 will shoot... (Maximum fps listed, always start 10% lower and work...

www.longrangehunting.com

 

[budlight]

What size is the gas block and tube length?

 

[dwinmeade]

What size is the gas block and tube length?

PM'd you.