A weight set hanger system comprising: a hanger comprising a hanger shoulder ; a spool body a rotationally fixed packoff body resting on the hanger shoulder , the rotationally fixed packoff body comprising a first load shoulder , a second load shoulder , and a plurality of seals ; a first locking ring positioned on the first load shoulder and projecting inward; a second locking ring positioned on the second load shoulder and projecting outward; and an actuating ring located above the packoff body and first and second locking rings and comprising a first angled face , and a second angled face ; characterized in that : the actuating ring further comprises a plurality of spring-loaded locking pin assemblies ; and in that , in use, the actuating ring is configured to transmit a pressure to the rotationally fixed packoff body , wherein, in use, the first load shoulder and the first angled face are configured to force the first locking ring away from the actuating ring in a respective groove of the hanger , wherein, in use, the second load shoulder and the second angled face are configured to force the second locking ring away from the actuating ring in a respective groove of the spool body , wherein, in use, the plurality of spring-loaded locking pin assemblies are configured to spring towards the hanger , and wherein the plurality of seals seal against the hanger . a hanger comprising a hanger shoulder ; a spool body a rotationally fixed packoff body resting on the hanger shoulder , the rotationally fixed packoff body comprising a first load shoulder , a second load shoulder , and a plurality of seals ; a first locking ring positioned on the first load shoulder and projecting inward; a second locking ring positioned on the second load shoulder and projecting outward; and an actuating ring located above the packoff body and first and second locking rings and comprising a first angled face , and a second angled face ; characterized in that : the actuating ring further comprises a plurality of spring-loaded locking pin assemblies ; and in that , in use, the actuating ring is configured to transmit a pressure to the rotationally fixed packoff body , wherein, in use, the first load shoulder and the first angled face are configured to force the first locking ring away from the actuating ring in a respective groove of the hanger , wherein, in use, the second load shoulder and the second angled face are configured to force the second locking ring away from the actuating ring in a respective groove of the spool body , wherein, in use, the plurality of spring-loaded locking pin assemblies are configured to spring towards the hanger , and wherein the plurality of seals seal against the hanger . the actuating ring further comprises a plurality of spring-loaded locking pin assemblies ; and in that , in use, the actuating ring is configured to transmit a pressure to the rotationally fixed packoff body , wherein, in use, the first load shoulder and the first angled face are configured to force the first locking ring away from the actuating ring in a respective groove of the hanger , wherein, in use, the second load shoulder and the second angled face are configured to force the second locking ring away from the actuating ring in a respective groove of the spool body , wherein, in use, the plurality of spring-loaded locking pin assemblies are configured to spring towards the hanger , and wherein the plurality of seals seal against the hanger . <EOS>