KJW MK1 Ruger NBB 16 Brass tube installed and inner barrel fitted

You can see in this view that the barrel is now a much better fit in to the newly installed brass sleeve.This stabilises the barrel.
You can see in this view that the barrel is now a much better fit in to the newly installed brass sleeve.This stabilises the barrel.

KJ Works Ruger MK1 NBB - Gas Pistols - Airsoft Forums UK

Pistol Inner Barrel Parts

KJ mk1/mk2, the ultimate upgrade guide! Part I: Internal mods (EN Version)

KJ Works Ruger MK 1 World of Replica Air Pistols

KJW MK1 Gas Non Blowback Airsoft Pistol : Sports & Outdoors

KJW Ruger Mk1 NBB Pistol Mods - ArniesAirsoft Forums

KJW Ruger Mk1 NBB Pistol Mods - ArniesAirsoft Forums

KJW High Power Non-Blowback Airsoft Gas Pistol w/ Metal Hopup (Model: Mark-I), Airsoft Guns, Gas Airsoft Pistols - Airsoft Superstore

BEGADI - KJW MK2 NBB CO2 Version mit Stahl HopUp Unit & Koffer (frei ab 18 J.)

Railed Mk. 1 Barrel (3MW3GZ5J8) by PrecisionArmamentAirsoft

KJW Ruger Mk1 NBB Pistol Mods - ArniesAirsoft Forums

Inner Barrel(GBBr) – SIXmm (6mm)