Shredder'S Concave Hopup Spacer

About the Shredder's Concave Hop-up Spacer:

 What is it made of and why?

It is made from a special engineering plastic which is light, flexible, chemical/wear resistant and great machinability.

Is it better than the other nubs/spacers out in the market? Why?

YES it is better! The reason behind my answer is... out of all the designs and measurements that I made, the concave shape of the SCS and its wide gap in the middle provides the BEST hop rubber bucking to bb surface contact. It aligns the bb's inside the barrel at the center and eliminates the possible sideways movement as the bb's pass directly below the hop bucking.

IMPORTANT!!! PLEASE READ!!!

The SCS makes your hop-up very sensitive and it must be aligned/centered properly to get its maximum effect.

The SCS is not a "plug and play" hop-up upgrade and you must eliminate all the hop-up problems (wobbles, misalignments, hop-up defects such as plastic/metal "flash" that came from the factory molds, barrel window must be at least 4.10mm wide and the edges should not be sharp).

I can guarantee that the SCS will improve bb groupings and range PROVIDED that it is installed properly. If you install it hastily without troubleshooting and fixing your hop-up and barrel problems prior to the SCS installation, you will certainly get bad results.

Alternate Lookup: SCS