Glock G21 Gen5 MOS .45 ACP Semi-Automatic Pistol | Optic-Ready, Night Sights, Talon Grips
This Glock G21 Gen5 MOS pairs the power of the .45 ACP cartridge with the latest Gen5 upgrades and Glock’s first factory optic-ready slide for the G21 platform. It leaves the factory with tritium night sights and adds aftermarket Talon Grip panels for enhanced control, giving shooters a full-size defensive pistol that is ready for a red-dot optic right out of the box.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling Condition: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: This pistol exhibits only light handling marks, and the bore remains bright and spotless.
What’s Included
- Glock factory hard case with matching label
- Glock Owner’s Manual
- 3 × 13-round OEM Glock .45 Auto magazines with high-visibility orange followers
- Glock Modular Backstrap palm-swell inserts
- Glock MOS adapter plate #06
The Gen5 MOS slide features forward and rear serrations, a beveled nose profile, and an integral MOS cut that accepts popular micro red-dot footprints using the included adapter plate. This is the first factory optic-ready variant of the Glock 21, offering a straightforward path to red-dot accuracy on a .45 ACP platform.
A Glock Marksman Barrel with polygonal rifling and a recessed crown promotes consistent accuracy and long service life. The bore is serial-matched to the slide and frame, underscoring Glock’s tight manufacturing tolerances.
Factory tritium night sights—an orange-ring front blade and twin-lamp rear notch—provide a clear, fast sight picture in low-light conditions. The flared mag-well and ambidextrous slide-stop lever round out the Gen5 ergonomic upgrades.
Aftermarket Talon Grip adhesive panels wrap the polymer frame, creating a more secure, tactile surface without adding bulk. Combined with the full-size grip and interchangeable backstraps, the pistol fits a wide range of hand sizes while maintaining positive control under recoil.