Affordable Harris bipod that I use on my 417:
http://www.milsig.ca/paintball-acces...adaptors-p-732
I also run an AIM JTCR1 1-4x adjustable optic on mine, looks and works phenomenally on the 417 platform. Anything over 4x magnification isn't really worth the extra heft and money!
http://www.airsoftmegastore.com/2743...nal-Rails.aspx