I've had my cocker for about 4 months now, coming from a 98custom, and was wanting to quiet the gun down a little more. This bolt is sooooo much smoother than the stock bolt! I read a review that if you tip your gun back, the bolt and back block slides backwards which I thought was exaggeration, but it wasn't. Here are the good points:
-No oily mess because the delrin self lubricates.
-Very easy to pull the bolt out (still would like to see a quick pull design).
-I got this bolt for $35 at my local shop.
-Made my gun noticeably quieter
-Doesn't scratch up my insides
The *only* bad thing I would have to say about this bolt, is the fact that pulling the pin is a real pain in the ass. I loosened the screw in the end of the bolt, but that really didn't help any. It almost seems that if I do this enough from the left (where my cocking rod is), the rod will bend out and my back block won't be flush or straight anymore. The stock cocker pin was much smoother than Shocktech's. Its not impossible, but if you were under fire it might be a hassle. Thankfully I almost never ever break paint.
GREAT bolt! I'm glad I picked this up and would recommend it to anyone looking to switch from the stock bolt. I just hope to see a better pin design from Shocktech in the future, and I'll get that one too =)
If you use the stock cocker pin with a supafly, they often fit too tight. I have 2 supaflys so i know. 1 works ok with the WGP pin the other doesn't the shocktech pin works well with both. Too bad it is not plastic. I might reccommend making a pin out of a chopstick or something. it would be lighter than even a lot of delrin pins.