Falcon hotel cylinder ic core

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The "C" indicates small format IC core, which is the only core style Falcon products.  The C987 will be provided less core unless -6, or -7 suffix is specified (6 or 7 pin core) Example:...
The following document contains information on Falcon (Non I/C) Hotel Cylinders, including part numbers, key requirements and operation.   Falcon Hotel Cylinders.
Yes. Both Schlage and Falcon SFIC mortise housings will accept 6 and 7 pin cores with no additional parts.
For standard (non-IC) cylinders, use the Falcon #4 straight cam For IC cylinders, use the Falcon #5 cam 
 DESCRIPTION PART NUMBER   Conventional Core  23-030  Conventional Core less logo  23-031  Primus Core  20-740  Primus XP Core  20-740-XP  Primus Core less logo  20-741 ...
The ND85/AL85/A85 hotel lock is only available in a conventional Key-in-Lever cylinder.  Interchangeable core and Primus are not available with this function. 
A Primus Hotel cylinder (as well as an IC hotel cylinder) is not possible because there isn't enough room inside the cylinder for all of the required components.