M4A1 SD

Build from Otter Weapon Worx
Photo from Highway Dude

PARTS LIST

Upper Receiver

Collar: 7×7
Muzzle Device: OPS INC Brake
Upper Receiver: Colt
Barrel: Colt 14.5” FSP Socom Profile
Gas Block: Colt FSB
Handguard: KAC RAS
Bolt Carrier Group: Colt
Charging Handle: Colt Milspec
Optic: Trjicon TA01NSN ACOG
Laser: PEQ 2
Accessory: LMT M203
 

Lower Receiver

Lower Receiver: Colt A2 profile
Stock: Colt CAR, Colt Waffle
Grip: A2 
Trigger: Colt
Trigger Guard: GI