Costume guides:
The basic SG-1 garrison uniform (FB)
SG-Operations Costume Guides have some slightly dated info, but it's basically sound.
IMFDB has some useful material regarding the various firearms used in the SG series - SG-1, SG: Atlantis, SG: Universe
Vendors:
Stitch's Loft Probably the best store for a complete SG kit. Has both uniforms and props. Usually not in store though so be prepared to wait while they're being manufactured.
SG1props.com have some exciting looking props for purchase, such as a GDO and a upper receiver conversion kit for the P90 TR
If you know of any other useful guides, vendors or reference material, let us know below
