Shop › PEARCE GRIP EXT FOR GLK G4 9/40 PEARCE GRIP EXT FOR GLK G4 9/40 $9.95 Pearce Grip Grip Extension, Fits Glock Gen 4, 9/40/357 Sig, 45 GAP, Black PGG4PLUS Quantity: Add To Cart Added! Pearce Grip Grip Extension, Fits Glock Gen 4, 9/40/357 Sig, 45 GAP, Black PGG4PLUS