Services offered :
Mostly everything except systema's PTW and related (AEGs, GBBs, GBBRs, BA)
Links to documentation of work: http://www.airsoftcanada.com/showthread.php?t=29976
or just search on ASC... Otherwise...
I've owned and improve so many weapons since 2005 plus fixing and upgrading many people gun... Experience is there.
Method of contact: airsoftgundoctor.ca
Custom CA M15A4
ARES Tavor Tar-21
KA Sig 556 Shorty
A&K m249 Para