Original lever and connecting rod + nozzle +

Goggles with no side pull + top rail --- previous version forgot to include the top rail

Instant airtight O-ring outer diameter 35x2.4 or 2.5, no supports

Original bearing tube - with lock

Print spring - clean build plate - or add skirt/brim

Nameplate AKS-74U and blank nameplate 0410

Instant airtight fly swatter head + O-ring 35x2.4. Airtightness is worse than the original, but the score can be improved by about 5 points

Dual O-ring

Strap Loop - Socket Head M4x16mm

FX Buttstock Spring Stabilizer Rod----use M3*130~140mm

0.16mm~0.2mm layer height, 3 walls, 15%~50% infill

Built-in bearing tube 0.2mm layer height---Print bearing 0.08mm layer height--Filament fixed

0.16mm layer, 3 walls, 15% infill

0.2mm layer, 3 walls, 15% infill

0.2mm layer, 2 walls, 15% infill

0.16mm layer, 2 walls, 15% infill

0.2mm layer, 6 walls, 20% infill