USA made .750 carbine length chrome-moly steel low profile non-adjustable gas block and stainless steel gas tube. Slide on set screw type, which requires removing the muzzle device to install. This was taken off of an unused upper. $20. Willing to ship.
Will also trade for 5.56/.223 ammo (NON steel-cased), 7.62x39 ammo (NOT Tula), or .308 ammo (NON steel-cased).
I can meet near Dobson and the 202 in Mesa or near 51st Ave and Baseline in South Phoenix/Laveen.