Eyelet & Thumb Screw USA made by HDPS Steel eyelet and thumb LONG cross block with flat and eyelet screw (pair), works with stock block B or C
$48.00
ATTENTION – Be aware that HDPS CORP is the only maker of Conversion Blocks (B and C) for the Heckler and Koch USC to UMP conversion. We have received emails with problematic Blocks made and sold by other manufacturer claiming to be a Block B. MAKE SURE IT IS ENGRAVED as you see in photos to avoid fitting problems with counterfeit Block B’s
USA made by HDPS Steel eyelet and thumb LONG cross block with flat and eyelet screw (pair), works with stock block