FALCON 20 FLT CREW HAS A RWY EXCURSION AT RIL.

Narrative

I WAS ACTING AS SECOND IN COMMAND AND PF OF A FALCON 20 ACFT. WX AT EAGLE; CO; LOOKED MARGINAL SO THE PIC AND I MADE THE DECISION TO GO INTO RIFLE (RIL). THERE WAS AN OVCST LAYER BUT NO PRECIP AT THE TIME OF LNDG AND THE RWY APPEARED TO BE WET. I CROSSED THE RWY THRESHOLD AT APPROX 50 FT AGL AND TOUCHED DOWN APPROX 50-100 FT PAST THE FIXED DISTANCE MARKERS. I QUICKLY LOWERED THE NOSE OF THE ACFT AND APPLIED MAX BRAKING. THE ACFT IS NOT EQUIPPED WITH DRAG CHUTE OR THRUST REVERSERS SO THE ONLY THING I HAD TO SLOW THE ACFT WAS BRAKES. I NOTICED THE ANTI-SKID SYS WAS REALLY WORKING BUT THE ACFT WAS DECELERATING AT A SLOWER THAN NORMAL RATE. THE ACFT BRAKES WERE APPLIED AND STILL THE ACFT ENDED UP ABOUT 25 FT OFF THE END OF THE RWY. I THINK THE ARPT SHOULD ADD A STOP-WAY AT THE END OF THE RWYS AND ADVERTISE OVER ASOS THE POOR BRAKING ACTION WHEN THIS RWY IS WET. I ALSO THINK THE RWY NEEDS TO BE RESURFACED. AFTER INSPECTING THE RWY SURFACE AT RIFLE ONE QUICKLY OBSERVES HOW SLICK THE SURFACE IS. IT LACKS THE POROUS QUALITIES MOST RWYS HAVE THAT DO SUCH A GOOD JOB OF DISPLACING MOISTURE. FORTUNATELY THERE WAS NO DAMAGE TO THE ACFT OR ARPT AND NO PAX ON BOARD.