Hello All,
Actually a bipod is only a substitute for the supporting arm, and applies no pressure in and of itself on the weapon.
The purpose of the bipod is merely to eliminate the small movements that occur when supporting a weapon with the hand/arm. It also provides some elevation to the muzzle - bipods can be, after all, quite tall, and not merely 6-9 inches high. This elevation can assist the shooter in overcoming obstacles that would otherwise hinder their view of the intended target.
Bipods normally do not exert pressure on the weapon, except in those cases where the weapon itself "jumps" repeatedly due to recoil. The M249 Squad Automatic Weapon (SAW) and the M60 machine gun come to mind as good examples of these types of weapons. Both tend to "jump" and "creep" away from the initial firing position, thereby changing the point of aim considerably. The use of a bipod, with its "feet" firmly planted into the ground, helps the firer stay on target.
The Sub2000, being of light (comparatively speaking) and, more importantly, single recoil, should not suffer any damage to its hinge during firing using a bipod, especially if it is a forearm-mounted one. One way to mount the bipod as close as possible to the hinge would be to use a solid dual level scope riser that attaches to the forearm just forward of the hinge, yet places the bipod itself under the end of the forearm.
My earlier suggestion as to using a barrel clamp-on bipod was an attempt to reduce weight, while also being less cumbersome.
And, if you still have trepidation about the effects of the "jump" on the hinge, place a section of thick, duct tape-covered foam under the "feet" of the bipod; the foam would absorb some of the energy of the "jump" and reduce the impact.
I do hope this helps.
Tron1