This M16 x 10mm Heat-Set Insert is a brass threaded insert custom-ordered and sourced to accept all commonly available threaded-breech barrels, like the barrels included in newer Worker springers. Featuring exaggerated serrated knurling, this part is designed to be locally melted into custom plastic breeches so other spring-powered blasters can install threaded-breech barrels instead of standard hobby barrels. FEATURES:• M16 x 1mm Heat-Set Insert• Convert standard springers to threaded-breech barrels• Makes reliable, repeatable threaded joint• Designed for Worker threaded barrels• Compatible with all common threaded barrels• Requires modified or custom-designed breech part INCLUDES: • 1 M16 x 1mm Heat-Set Insert 3D DESIGN NOTES:• 20-20.5mm hole diameter, 10mm deep SPECS:• Material: Brass• Dimensions: • Thread Diameter: M16 • Thread Pitch: 1mm • Length: 10mm • Diameter: 20mm • Weight: 8.1g• SKU: HW-HEAT SET INSERT_16MM LINKS:• Threaded-Breech Barrels• 3D-Printed Threaded Breech Parts• More Heat-Set Inserts• More Hardware