Amazing looking slam caps with usable AFC* for the 40mm Mason RDAs! Precision CNC cut and the black models covered with a heat resistant enamel, these top caps are sure to be the cherry on top of the already attention grabbing Mason 40mm.
*please note* there are two different AFC configurations throughout the 40mm evolution. the 1st gen was all 90 degree cuts while the 2nd run was angled sharper for more of an X configuration vs the original + shape. the Prima cap will work on BOTH these gen 40mm rdas in dual coil mode but the 2nd gen does not support the quad airflow. This was changed mid production and Prima was not made aware of these changes*
2nd gen 40mm rdas are identifiable most easily by the negative posts because the have holes cut both up/down AND left/right. the 1st gen negative post only have one long hole running through the negative posts.