In a dilemma. I just purchased a used upper from a buddy in 450 legend, missing the gas block and tubing. I have a bca 350 upper I've been using for reference. On my 350, the tube seems to measure about 11.75" from end of gas block to the bolt carrier end.
My question is, I know I need a low profile gas block because of the forearm. The 450 upper measure's 18.75" from end of barrel (before muzzle break) to the bolt carrier mark. Where the old gas block was is the same measurement as my 350 upper.
Can anyone tell me the exact setup I should buy (length, diameter, which block)
I'm brand new to the platform, thanks for the help.