For sale is my M249 Lightweight Para, fitted with a version 2 quick change gearbox and made from mostly polymer. No magazine is included 

very easy to work on with only 4 screws  and one pin to remove the gearbox completely 

This works with M4 magazines or Box Type 

Fitted with a gate X-ASR basic mosfet and specna arms basic motor which was better than the original, . Gearbox has been cleaned, shimmed and regressed. No wear on Piston, or gears. O-ring holds Airseal 
 

the battery can be fitted under where the barrel slots into place. 
 

Chronograph result of an average of  274fps (0.87J) on a 0.25g bb 

Rate of fire on 7.4v Li-ion 18.1 R/S

Rate of fire on 11.1v Li-ion 30.3 R/S

I would recommend a hop rubber change due to age

Happy to answer any questions or provide additional photographs.

UKARA or other valid defence required

paypal fees and postage included in price, sent via parcel force 48 with tracking and updates provided

No trades 

located in Malmesbury Wiltshire if collection is preferred.