Based on Snow Wolf SW-022 
Scope is optional products.
 
Upgrade:
1. T-N.T. S+ Barrel 485mm
2. T-N.T. K98 TR hop-up bucking.
3. Whole cut CNC aluminum hop up chamber
4. CNC Steel Nozzle ( thicker for better air seal, O ring for shock-absorbing
5. CNC Aluminum Piston
6. CNC Steel Spring Guide
7. Adjusted CNC Steel Sear Set
8. Sandblasting Blacken Bolt.
9. SWIT K98 Real Wood Stock 
10. Recommended BB weight 0.4+Gram, Optimal 0.45-0.49 Gram.
 
FPS:320/420 with 0.2 BB

Extra magazine:
24 Rounds Magazine for Snow Wolf Kar98K
 
Links:
Review Video by NEO035 
Review Video by Airsoft Mike 
Review by Kicking Mustang
Game Play Video by KickMustang