Home > Upper Receivers

SINGLE SHOT OR 5-ROUND MAGAZINE FED

INTEGRATED PICATINNY RAIL

ULTRA-HARD FIRING PIN (ROCKWELL C62)

PROPRIATARY MECHANICALLY ASSISTED PIN SAFETY (MAPS)

INTEGRATED PICATINNY RAIL

KEYMOD RAIL SYSTEM

FREE-FLOATING BARREL

STANDARD BULL BARREL OR (OPTIONAL) TRI-BARREL

LENGTHS OF 22" OR 30"

HIGH VOLUME 6-PORT BRAKE OR OPTIONAL TANK BRAKE

INCLUDED KEYMOD BIPOD RAIL

HANDGUARD MADE FROM DURABLE 7075 ALUMINUM WITH A HARD COAT ANODIZE

PRECISION CHAMBERING

OVER-PRESSURE RELIEF PORT

INTEGRATED HAMMER DROP SAFETY

STANDARD AR-15 MOUNTING

HARDENED STEEL 4140 BILLET RECEIVER WITH INTEGRATED LUGS

.50 BMG Upper Receiver AR-15 Style
McCutchen Firearms' series of complete .50 BMG upper receiver assemblies for AR-15 style lowers offers industry leading features for greater accuracy and user-safety. These feature the proprietary mechanically assisted firing pin safety as well as an integrated hammer drop safety, making it one of the safest bolt action rifles available. With components made from electro-induction hardened steel and 7075 aluminum billet this rifle will last a lifetime. Click on the icons above to see all the features of this amazing .50 BMG, re-engineered to be safer and more reliable than anything else you'll find.

McCutchen Firearms MF-50M Magazine-Fed .50 BMG Upper Receiver for AR-15 Rifles MF-50M (Magazine)

.50 BMG Bolt-Action Upper Receiver Assembly with 5-Round, Box-Magazine

Our Price: $2,795.00
McCutchen Firearms MF-50S Single-Shot .50 BMG Upper Receiver for AR-15 Rifles MF-50S (Single-Shot)

.50 BMG Upper Receiver Assembly, Single-Shot

Our Price: $2,295.00