F Kel-Tec P11043 P-11 Magazine Extension 40 S&W Polymer Black Finish $6.13 P11043 show more like this Free shipping over $400 (Excludes Ammo) Gman Sport F Kel-Tec P11043 P-11 Magazine Extension 40 S&W Polymer Black Finish $6.30 P11043 show more like this 14.99 Locked Loaded F KEL P043 P11 MAGAZINE EXTENSION $6.35 P11043 show more like this Free on Guns, $9.99 Accessories, $14.99 Ammo Tombstone Tactical F Kel-Tec P11043 P-11 Magazine Extension 40 S&W Polymer Black Finish $6.35 P11043 show more like this Calculated in Cart DACK Outdoors