(sold) Well I am nearly finished with my 9mm AR-15 build and have extra's of some parts. $75 (plus $5 shipping) C-Products Mag block (selling for a buddy) Nearly new about 50 rounds through it, hard to tell it has been used. $25 (plus $5 shipping) RRA 9mm heavy Buffer(NEW never used or installed) $25 (plus $5 shipping) RRA 9mm Hammer (new never used or installed) OR $125obo for all three including shipping with USPS MO For everything to covert the lower to 9mm thanks for looking, Steven p.s. questions? bring them on!