Magpul MAG536-BLK BEV Block made of Polymer with Steel Support Shank for AR-15 & M4 Upper, Lower Receivers $49.95
Havalon Knives XTC-EXP EXP 3.06" Folding Tanto Plain Black TiCN AUS-8A SS Blade Black FRN Handle Includes 12 Replacement Blades/Case $62.99