Glock 21 Gen 2 Transitional 'Gen 2.5' .45 ACP, Full-Size, Lone Wolf 5.25 in Threaded Barrel, Metal 3-Dot Sights, Light Metallic Slide
This late Gen 2 transitional Glock 21 pairs a collectible finger-groove, no-rail frame with a Lone Wolf stainless threaded barrel measuring approximately 5.25 inches. It features a light metallic-finished slide, Austrian import markings, and metal 3-dot sights with colored inserts. Rear-only slide serrations and a 10-round magazine round out this distinctive, full-size .45 ACP setup.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Strong polygonal rifling with crisp definition.
Specific Condition Notes: This firearm displays only light signs of wear and handling. Minor surface scratches mark the metal in a few spots. It remains clean overall.
What’s Included
- 1x 10-round Glock factory .45 Auto magazine (Austria-marked)
- Lone Wolf–marked stainless extended threaded barrel (installed)
- Metal 3-dot dovetail sights (installed)
This Glock 21 is a late Gen 2 transitional, often referred to as the 'Gen 2.5,' combining molded finger grooves with a frame that has no accessory rail. The slide uses rear-only serrations, aligning with the era’s configuration and giving the pistol a clean, uncluttered profile.
The installed Lone Wolf stainless barrel measures approximately 5.25 inches and is threaded. It provides extended length over standard, with stainless construction and a clean crown, complementing the .45 ACP chambering.
The slide presents a light metallic finish, distinct from the typical black, adding a unique visual contrast with the black polymer frame. Sighting is handled by metal 3-dot sights: a metal front with a single yellow dot and a metal rear with two orange/yellow dots.
Markings include MADE IN AUSTRIA / GLOCK, INC., SMYRNA, GA. on the frame/slide, underscoring Austrian origin with import identification. The pistol is striker-fired with a short-recoil, locked-breech action and comes in a full-size format with a 10+1 capacity using the included Austria-marked factory magazine.




