AC Unity Glock 17 34 Magazine 19 Rounds with Window

Verify this magazine’s exact pistol model/generation and caliber (don’t assume) before purchase — it looks like a polymer, steel-lined style with numbered witness holes (shows ~7/11/13/17) and an extended baseplate, commonly used for 9×19 pistols. Inspect feed lips, follower and spring on arrival, avoid over-loading on first use, and lightly lube the follower if needed. Function-test the magazine several times at the range to confirm reliable seating, feeding and lock-back. Finally, follow all local capacity, storage and safety laws and store magazines unloaded for long-term spring life.