View Single Post
Old March 10th, 2014, 08:45   #3
FirestormX's Avatar
Join Date: Jun 2010
Location: Mississauga, Ontario
The four most common gas systems for M4s in Canada are WE, KJW, KWA, and WA (G&P uses the WA system).

Read up on the pros and cons of each one. Any GBBR will likely need a velocity reducer/NPAS installed. But other than that, different systems will have different parts that you'll want to replace.

KJW is said to be "the best out of the box", and it's my personal favourite, but I haven't done much gaming with the other systems.
FirestormX is offline   Reply With Quote