Now you can use musket caps on your in-line rifle with the Blomquist Conversion Nipple. Why limit the effectiveness and reliability of the in-line rifle with standard #11 percussion caps. Convert the rifle to musket ignition with these 1/4 X 28 steel nipples manufactured from 12L14 steel and heat treated to just the right hardness. The base is narrow enough to fit any in-line breechplug without modification. Legal in any state that allows in-line rifles, especially for Remington inlines.