So I decided to order a GB worth of systema energy parts. The first thing I did was weigh them against the existing parts in my gun.
(The weight on left is the original and on the right is the systema energy.)
Spring Guide------10 grams (unknown)------------------------------15 grams
Cylinder Head-----27 grams (I think CA)-----------------------------9 grams
Cylinder------------9 grams (Systema Type 0)-----------------------9 grams
Piston--------------12 grams (systema polycarb)-------------------(Systema energy became out of stock and is on back order)
Piston head-------10 grams (systema duracon)--------------------10 grams
Tappet Plate------4 grams (I think CA)-------------------------------4 grams
Air nozzle----------0 grams (No idea)----------------------------------0 grams
Metal Bushings---0 grams for one bushing/1 gram for all--------0 grams for one bushing/2 grams for all
Spur gear---------19 grams (CA)--------------------------------------19 grams Torque up ratio
Bevel gear--------16 grams (CA)--------------------------------------17 grams Torque up ratio
Sector gear-------25 grams (CA)--------------------------------------20 grams Torque up ratio
Pinion gear-------(I could not remove the pinion gear)-----------1 gram
Spring -------------Using the same Systema M120 so I did not weigh it
Final Gear Box weight (using a CA V2 (I think it's re-enforced))-----539 grams------524 grams
Weight change: 15 grams. Not a massive difference like I was expecting.
Quality: All the parts come in the systema plastic box with foam surrounding the part. Some of the boxes came dented but none of the parts were damaged.
Other: The gears came with red caps on the rods and they came pre-shimmed. The pinion gear can with a set screw and an hex key with instruction saying to put the set screw in then apply heat to make the adhesive work. The cylinder head came with 2 different O-rings, a white and black one. The information sheet that came with it says the black O-ring is for temperatures of 5-40 degrees Celsius and the white O-ring is for temperature below 5 degree Celsius. And it warns that if the white O-ring is used in warm weather it will break.
Pictures will be up tonight and I need help on removing the pinion gear from a KWA motor because I wont get to test how it all works until I switch the pinion gears.

