The BKF M5 MOD-0 Assembled Upper Receiver are held to tight tolerances, Dry film lubed and tight fitting when paired with our M5 MOD-0 Lowers. Forged from 7075-T6 aluminum, match this upper with one of our M5 MOD-0 lower receivers for a solid and dependable fit. This upper receiver has laser engraved T-Marks. (The Inside Diameter for the barrel extension is slightly undersized for a tighter fit to the barrel and will produce a more accurate rifle. Please note: you may need to use a heat gun or hair dryer to warm up threaded bore of receiver and freeze your barrel if your barrel extension is too tight.)

Features:

• M4 Feedramps
• 7075-T6 aluminum
• LR-308 DPMS High Pattern
• Forward Assist
• Laser engraved T-marks
• Dry Film Lubed Upper
• Type 3 Hard Coat Anodizing
• Made in the USA
• Comes with LR-308 Ejection Port Cover Kit (dust cover) and Forward Assist installed