forged upper/lower BCM MCMR-13 handguard EOTech EXPS family holographic sight Daniel Defense iron sights EOTech ATPIAL or ATPIAL-C LAM Railscales LDAG vertical foregrip BCM M-LOK panels not clear on muzzle device, perhaps Surefire SF3P or similar SB Tactical SBA3 arm brace LAW Tactical folding stock adapter some other stuff
holstered Glock mounts an adjustable-brightness version of the Trijicon RMR
forged upper/lower BCM MCMR-13 handguard EOTech EXPS family holographic sight Daniel Defense iron sights EOTech ATPIAL or ATPIAL-C LAM Railscales LDAG vertical foregrip BCM M-LOK panels not clear on muzzle device, perhaps Surefire SF3P or similar SB Tactical SBA3 arm brace LAW Tactical folding stock adapter some other stuff
holstered Glock mounts an adjustable-brightness version of the Trijicon RMR
Sorry, I was a bit lazy - the long version of "forged" is that the receivers are a visual match for an M16A2-pattern lower and an M4/M16A4-pattern upper. Both types are machined from forgings and extremely common, and essentially the default receivers for a civilian AR.
They could, in theory, be machined from stock (or 3D printed, or whatever) to look the same, but I feel that's comfortably into Occam's razor territory.
