Can anyone please help with translating the following:

"Lefaucheux-Gewehre, System Colleye mit Drahtläufen and Pirschstutzen Kaliber 20, 24, 28, 36 nach dem Systeme Colleye mit Eisenrohr and dergl. m. Stahlrohr in 1866"

I believe it is referring to Lefaucheux (pinfire) guns using the Colleye System, and that deer rifles of varying calibres are offerred... I would appreciate any help in understanding this text.