Free: Contests & Raffles.
Alexander 16" M4 carbine barrel. The carbine pictured has taken Mulies clean out to 493 yards.
also, what is the difference/benefit of a .750 vs. a .936 gas block?
Quote from: Rob on October 25, 2012, 09:07:48 PMalso, what is the difference/benefit of a .750 vs. a .936 gas block?The only difference is barrel contour, large heavy bull barrels will have the .936" block where as the standard heavy barrel will have the smaller more common .750" gas block. It's all about barrel diameter.Your best bet is to purchase the barrel and bolt as a matched set, most suppliers will have that option available. Since you need both this is the best way to get set up, otherwise, if you already had the bolt in most cases you can use it with a new barrel. But still I feel the matching set is the way to go, the headspace will be set from the barrel manufacture, you will simply slip the barrel in place and screw on your choice of hand guard.
Not to hijack this thread but.......Jim the Plumber, Your 6x45 barrel, what is your favorite load? I have a BHW 6X45 10 twist 5 groove that will shoot only 58 V-Max boolets with reasonable accuracy, everything else is a total turd for groups.
So I have to ask because you guys have me thinking crazy now. I currently have an AR in 5.56. I can change out the upper to a 6.5 and buy new mags and basically have a new gun, correct?
Quote from: FALFire on October 25, 2012, 09:43:26 PMNot to hijack this thread but.......Jim the Plumber, Your 6x45 barrel, what is your favorite load? I have a BHW 6X45 10 twist 5 groove that will shoot only 58 V-Max boolets with reasonable accuracy, everything else is a total turd for groups.Try the 85 grain Sierra spbt over 23.5 Ramshot Exterminator and LC primed brass. I'm getting sub MOA with a 6X45, no name 10 twist 18" rifle length gas port, barrel.
Quote from: Jburke on October 26, 2012, 12:28:50 AMSo I have to ask because you guys have me thinking crazy now. I currently have an AR in 5.56. I can change out the upper to a 6.5 and buy new mags and basically have a new gun, correct?You don't even have to change out the upper on your 5.56. You can purchase a 6.5 LBC/Grendel barrel, bolt & magazine. Switch the bolt out in a flash, jam a Grendel Mag in it and swap the 5.56 barrel for the 6.5 LBC/Grendel barrel and off you go. Change it back to 5.56 anytime you want. You can also build or purchase a complete 6.5 upper and magazine. Pull your two take down pins, remove your 5.56 upper. Drop your 6.5 upper on and gas it up with a Grendel mag and your good to go.