If you're uneasy about drilling into your factory gun stock, this 60mm bottle clamp will easily attach to your 60mm carbon fiber or aluminum bottles. It has rubber pads on the inside to prevent any marring to your bottle.
This clamp has picatinny rails at the bottom for you to connect your preferred picatinny accessories.
FX Carbon Fiber & Steel Bottles
RAW (HM1000X, etc)
Daystate (Redwolf, Airwolf, etc)
Brocock (Commander, Bantam, etc)