Everything else is stock
stock barrel is good if u have the money upgrade to a freak
New bolt (evil)
Fast, many upgrades
A little bit tall
With tank and hopper it is a little bit heavy
The impulse is a great marker. I feel that smart parts has done a good job on a high end gun that is under 800 CND. I am happy with the gun stock and i am happy that there are so many available upgrades for this gun. The one thing i did not like about this gun is when i first bought it I had re-cocking problems but that was easily fixed by a tapeworm.
If you have the money to spend i would recomend this marker. Stock the marker is not bad and withqa few upgrades you have yourself a greta marker.