A tactical-gear-accommodating seatbelt system apparatus for use in a vehicle by a person wearing tactical gear upon waist and front torso, said tactical-gear-accommodating seatbelt system comprising: (i) an extender strap adapted to be ultimately anchored at a first end to a floor of the vehicle through or in place of a standard seat-level receptacle; (ii) a sure-release receptacle non-slidably attached to a second end of said extender strap and having two receptacle fittings; (iii) a shoulder strap having at a first end an anchor point adapted to be anchored approximately at shoulder level and behind the person, and at a second end a buckle tab; and (iv) a lap strap having at a first end an anchor point adapted to be anchored approximately at floor level of the vehicle and behind the person, and at a second end a buckle tab; wherein said sure-release receptacle is adapted to couple and uncouple with the buckle tabs of said shoulder strap and said lap strap such that the coupling will hold securely under strain and will freely uncouple after such strain; wherein said extender strap has sufficient longitudinal aspect such that the sure-release receptacle, in use, is located toward the center front of the person's lower torso, and is easy to find by sight or feel, and easy to manipulate for coupling or uncoupling; wherein the uncoupling of the buckle tabs of said shoulder strap and said lap strap from said sure-release receptacle allows said shoulder strap and said lap strap to be retracted separately and independently each of the other, thereby avoiding catching on the tactical gear; and wherein said sure-release receptacle further comprises a rotary partial-turn release control, an internal coupling and uncoupling mechanism having at least one centrally-located cam, or an internal coupling and uncoupling mechanism having at least one pawl. (i) an extender strap adapted to be ultimately anchored at a first end to a floor of the vehicle through or in place of a standard seat-level receptacle; (ii) a sure-release receptacle non-slidably attached to a second end of said extender strap and having two receptacle fittings; (iii) a shoulder strap having at a first end an anchor point adapted to be anchored approximately at shoulder level and behind the person, and at a second end a buckle tab; and (iv) a lap strap having at a first end an anchor point adapted to be anchored approximately at floor level of the vehicle and behind the person, and at a second end a buckle tab; wherein said sure-release receptacle is adapted to couple and uncouple with the buckle tabs of said shoulder strap and said lap strap such that the coupling will hold securely under strain and will freely uncouple after such strain; wherein said extender strap has sufficient longitudinal aspect such that the sure-release receptacle, in use, is located toward the center front of the person's lower torso, and is easy to find by sight or feel, and easy to manipulate for coupling or uncoupling; wherein the uncoupling of the buckle tabs of said shoulder strap and said lap strap from said sure-release receptacle allows said shoulder strap and said lap strap to be retracted separately and independently each of the other, thereby avoiding catching on the tactical gear; and wherein said sure-release receptacle further comprises a rotary partial-turn release control, an internal coupling and uncoupling mechanism having at least one centrally-located cam, or an internal coupling and uncoupling mechanism having at least one pawl.