"STN" as it is known is available on a number of RMKs, including the #15. Hope this helps.
Capt. Chris


Attachments
------#15-NASA-BR. G-3-B.JPG

------#15-NASA-BR. G-3-H.JPG


_________________________
Capt.Chris Stanaback
RKCC/RKCA Founder
RKS #016
NRA Lifetime Member
CAPTSTANABACK@aol.com
WEBSITE: www.captstanaback.com