I have for sale one factory FN TBM Detachable Box Magazine Kit which includes the bottom metal, one 10rd & one 5rd mag. This drop-in unit fits the FNH SPR/PBR/TSR and Winchester short action rifles and comes in it's original box. These cost over $400.00. I had this installed in a Manners stock briefly. Price: 280.00 shipped. Payment by Paypal friends & family or USPS Money Order only.