The GDR15 Upper Set is effectively half of a skeleton kit. Simply complete the build with a handguard and muzzle of your choice and it is ready to go onto a complete GDR15 lower.

This set is an excellent addition to a full GDR15 giving you 2 different builds perhaps with different barrel length to run on the same lower. Two different barrel lengths running the same BCG and spring also allows you to quickly alter the muzzle velocity for different site limits.

Kit includes:

• Outer barrel
• Inner barrel
• Hop up chamber
• Hop up bucking
• Charging handle