Aerial marksman rig

An aerial marksman rig comprising:

• a first upright support comprising:
• a first releasable connector attached to a first end of a first length of flexible material, the first releasable connector configured for removably coupling to a rotor-wing aircraft at a first side of a door opening thereof at a first upper location;
• a first releasable tensioner attached to a second end of the first length of flexible material and to the first end of a second length of flexible material, the first tensioner configured to releasably draw together the first length of flexible material and the second length of flexible material;
• and
• a second releasable connector attached to the second end of the second length of flexible material, the second releasable connector configured for removably coupling to the rotor-wing aircraft at the first side of the door opening thereof at a first lower location;
• a first friction buckle slidably coupled to the first upright support;
• a second upright support comprising:
• a third releasable connector attached to a first end of a third length of flexible material, the third releasable connector configured for removably coupling to the rotor-wing aircraft at a second side of the door opening thereof at a second upper location, the second side being opposite the first side;
• a second releasable tensioner attached to the second end of the third length of flexible material and to the first end of a fourth length of flexible material, the second releasable tensioner configured to releasably draw together the third length of flexible material and the fourth length of flexible material;
• and
• a fourth releasable connector attached to the second end of the fourth length of flexible material, the second releasable connector configured for removably coupling to the rotor-wing aircraft at the second side of the door opening thereof at a second lower location;
• a second friction buckle slidably coupled to the second upright support;
• and
• a first cross-support comprising:
• a fifth length of flexible material, a first end of the fifth length of flexible material being attached to the first friction buckle and a second end of the fifth length of flexible material being attached to a third releasable tensioner;
• and
• a sixth length of flexible material, a first end of the sixth length of flexible material being attached to the second friction buckle and a second end of the sixth length of flexible material being attached to the third releasable tensioner;
• and
• the third releasable tensioner configured to releasably draw together the fifth length of flexible material and the sixth length of flexible material;
• the first friction buckle being configured to lock against sliding when the first upright support is placed under tension and the second friction buckle being configured to lock against sliding when the second upright support is placed under tension, such that the first cross-support can support a firearm without sliding with respect to the first upright support or the second upright support.