Quote:
Originally Posted by 45K40
The Engagement Skills Trainer 2000 (EST ) uses Bushmaster weapons that have been modified to function off of air instead of ammo. Of the un-modified standard Bushmaster parts, the following have the highest rate of failure:
Hammer/trigger pins (shear in half at the groove(s). USGI never do this).
Bolt catch (breaks at the oval thumb pad if laid down hard with BC locked to rear,
USGI never do this).
Plastic  trigger guard (duh!) breaks.
Charging handle loses pin.
Rear sight housing is shaky (spring at ball is weak).
Disconnector wears fast (results in double-fire)
Trigger sear step wears fast (weak steel/heat treatment)
If you do buy a Bushmasher, replace the above with USGI parts and you'll be OK.
45K40 |
I wish I had read this 11 months ago. Used to be an EST 2000 grease monkey, and there were all these malfunctions beyond simple repair in the manual ie. trigger won't reset, failure to fire, laser prob. etc. Also the M4 model was strangely more reliable/lasted longer than the A2 despite equal use  . A simple puchase order for USGI parts could have solved most of it 
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