The XGGL43-9 XGRIP adapts the ETS 9 round 9MM magazines for use in the G43 pistols” incorporating the larger magazine into the grip and increasing the gun’s capacity.
X-GRIP Mag Spacer, Black, Adapts the ETS 9Rd 9MM Magazines for Use in the Glock 43, Compatible with 9Rd ETS Magazines Only XGGL43-9