The Glock 43 and 43X are among the most popular carry pistols on the market. The single-stack 9mm platform is reliable and accurate out of the box — so why upgrade the barrel? Several reasons: tighter chamber tolerances improve accuracy, aftermarket materials like stainless steel and DLC-coated steel resist corrosion better, and some shooters need a threaded barrel to ru …
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The Glock 43X and Glock 48 MOS pistols only accept RMSc-footprint optics, which makes the optic-selection problem narrower and cleaner than full-size Glock work. This isn't a 50-option category like the Glock 17 or Glock 19 lineup — the right pick comes down to glass quality, dot crispness, whether the emitter is open or enclosed, and whether you want a circle-dot reticle …
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