Kingman Spyder MR2 MR3 Paintball Gun Factory Replacement Feed Neck 321 FND013 feedneck by Kingman. $2.99. BLACK! Factory replacement feedneck for the MR3 or MR2 (newer models with eyes). Unlike the feedneck of the MR1 and initial MR2, this one has the integral eye cover plate and machined eye and wire slot underneath (eyes NOT included). This is a replacement for Kingman part #321/FND013 in your manual.. Save 80% Off!