Degree of Difficulty: *****
Fits all QB78 family air rifles.

NOTE - THIS IS THE NEW-STYLE, LONG TUBE. REQUIRES THE LONG TUBE CAP FOR USE WITH 12 GRAM POWERLETS. REQUIRES THE ARCHER AIRGUNS BULK FILL CAP FOR USE IN BULK FILL MODE (not the Industry Brand Bulk Fill Cap).

This kit can be used to up-grade QB78 and QB78 Deluxe rifles. The difference from the QB78 Main Tube is the presence of the slot in the tube for the de-gassing key, plus the key itself. This enables CO2 to be exhausted from the gun without "firing it dry". Contains the main operating tube which houses the valve and hammer assemblies. For .177 and .22 calibers.