Blem – G4 Side Charging Upper Receiver – Right Handed
* These Uppers had some issues with the bolt carrier door pocket being slightly out of spec. The bolt carrier doors had to be modified slightly to function properly. These uppers now function fine, but just need to be cerakoted now. Some uppers may need also have some blemish lines.*
– Standard Ejection Port – will NOT work for 458 SOCOM
– GIBBZ Arms Patent 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
– Rear Bolt carrier door to allow for easy bolt carrier removal and still keeping gasses in during operation (important for suppressed fire)
– Compatible with Mil-Spec and most other lower receivers.
– Included is our Enhanced Cam Pin which is optimized for our side charging upper with Melonite coating.
– Charging handle cover for keeping operating gasses in (also important for suppressed fire)
– Manufactured in the USA (Arizona) by GIBBZ Arms.
– Weight: 13.0 oz.
– Dimensions: 8.9 x 2.9 x 2.9 in
* Upper not compatible with hand guards featuring anti-rotation tabs without modification. *
IMPORTANT!! You MUST use the G4 Enhanced Cam Pin in the G4 Side Charging Uppers!
Use of a Standard Cam Pin will cause the Bolt Carrier Group to lock up in the G4 Upper Receiver and be VERY difficult to remove and could damage the Upper Receiver.
Click HERE for instructions on how to change the cam pin or check out our YouTube video.