16” chrome lined 1/7 government profile 5.56 Daniel defense barrel. Ended up doing a mk18 build instead. This barrel shoots great. Had a box of 50 rds through it. 140$ Paid 275$ new
Removeable. It’s threaded 1/2x28. Carbine length. Super reliable setup. I’ve got a gas block and tube already assembled I can throw in for a few bucks more. Block and tube are brand new