Internals that perfomed well under fire and ones that failed the test
Springs
Prometheus, PDI
Now testing: Matrix
Dislike: Systema, ICS
Gears: Systema high torque spur gears, G&P flat gear set, Prometheus triple
torque
Dislike: Systema helical, All ICS gears
Pistons: Systema poly, Hurricane poly
Now testing: G&P poly, Pormetheus poly
Dislike: alluminum pistons, Classic Army
Cyliinder sets: Systema bore up, G&P bore up
Now testing: Hurricane
Dislike: Classic Army
Piston head: Systema silent, Hurricane
Now testing: G&P
Dislike: Systema pom, Classica Army
Spring guides: G&P, Guarder, Hurricane
Dislike: Classic Army, Systema
Bearings: Prometheus, Systema
Now testing: G&P
Dislike: Classic Army
Motors: Systema super torque, Classic Army (EG1000)
Now testing: Hammer
Dislike: ICS turbo
Mechbox complete: Systema, GRS/G&P
Dislike: Classic Army
Note: ICS 2 piece is O.K.; the M4A1 AEG is limited to after market products because their threads are "unique."
Metal bodies: Hurricane, Guarder
Dislike: ICS/Olympic Arms, Classic Army
Stocks: Calvary arms fiberite LE, LR300, G&P
Dislike: ICS
Grips: A.R.M.S., Ergo, King Arms, ICS
Dislike: Classic Army
Sights: G&P, YHM, GG&G, G&G, Troy
Dislike: Star, ICS
SIR, RIS,RAS: Classic Army, A.R.M.S. #46 & #58, Daniel Defense
Testing: Surefire M73
Dislike: ICS, Tokyo Mauri
Lights: Surefire M962U. Streamliight (the best deal for 125 lumens)
Testing: M900A
Dislike: Pelican, and all airsoft fakes
Laser/Light combo: Laser Devices Blast
Testing: Streamlight M6
Laser: Otal, MR2, Laser Devices Blast, Eagle Eye, Star S-Lap
Dislike: G&P PEQ4, Beamshot
Testing: Green laser
Red dot: Eotech 551/512, For the money: G&P aimpoint
Dislike: Aimpoint ML2, Trijicon Acog, Star aimpoint