G4 Upper Receiver

The Next Step For The AR15

The G4 Stripped Upper brings Gibbz precision on your existing platform, with your existing
barrel. Featuring a left side, non-reciprocating side charging handle; beveled ejection port, rear
bolt carrier door, and charging handle cover, this upper brings the Gibbz pursuit of perfection to
your favorite existing rifle.

Specifications for G4 Stripped Upper

- Enlarged Ejection Port will work with AR15 calibers from 22LR to 50 Beowulf
- GIBBZ Arms Patented Pending Left Side Charging Handle
- Non-reciprocating with detent to keep the charging handle forward during operation.
- Uses all Mil-Spec and most Custom Bolt Carriers without modification.
- Beveled Ejection Port
- Full 15 Slot Picatinny Rail
- Side charging upper design leaves more clearance over the receiver for mounting optics.
- Bolt carrier door in the rear to allow for easy bolt carrier removal, and helps contain gases during operation
- Compatible with Mil-Spec and most other lower receivers
- Included is our Enhanced cam-pin optimized for our side charging AR15 upper with Nitride coating.
- Charging handle cover helps to mitigate extra gases
- Weight: 12.6 oz.

* Upper not compatible with hand guards with anti-rotation tabs without modification *

IMPORTANT!! You must use the G4 Enhanced Cam Pin in the G4 Side Charging Uppers!
Use of the Standard Cam Pin will cause the Bolt Carrier Group to lock up in the G4 Upper Receiver and be VERY difficult to remove and possibly damage the Upper Receiver.

Click HERE for instructions on how to change the cam pin.

Any backorders can be expected to be processed within 6 weeks.