Glock 43X 9mm 10-Round Pistol with Black Nitride Slide for sale. Black goes with everything. When it comes to concealed carry, the comfort, durability and reliability of the G43X is unparalleled. Now, get the best in this Slimline compact pistol, ideal for everyday use, in an all-black factory finish. A perfectly balanced slim fit for nearly all hand sizes with a satisfying magazine capacity and high concealability. The magazine capacity of the slim 01 magazine of the G43X is 10 rounds.