Need to confirm specs on Daniel Defense M4 Rifle (OD & thread pitch)

[BiggSean]

[a1fabweld]

Std barrel diameter should be .750" in front of the sight base. Lightweight is .625" if I remember correctly. Why don't you measure your own barrel?

[BiggSean]

It is .750" in front of the sight base per the specs posted on the Daniel Defense web site, however there is a very slight step down right before the muzzle.

I would measure it myself, but my caliper is broken apparently.