Glock G21 Gen4 USA .45 ACP Full-Size Pistol, 4.61 in Barrel, 13+1 Capacity, Matte Black, Made in USA, Includes 7 OEM Magazines
This USA-manufactured Glock G21 Gen4 stands out with clear "MADE IN USA" Smyrna, GA frame markings, a slide rollmark "GLOCK 21 Gen4 USA 45 Auto," and a "US" marking on the barrel hood. It includes seven Glock OEM 13-round .45 Auto magazines and a Savior Equipment pistol rug. Notable Gen4 features include the RTF grip texture with finger grooves and an enlarged, reversible magazine release, all in excellent condition.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Clean polygonal rifling with sharp definition.
Specific Condition Notes: There is little sign of prior use, and the firearm functions correctly.
What’s Included
- Glock G21 Gen4 USA .45 ACP pistol
- 7 Glock OEM 13-round .45 Auto magazines
- Savior Equipment pistol rug (tan)
The G21 Gen4 is a full-size .45 ACP, striker-fired pistol with Glock’s Safe Action system and a 4.61-inch steel barrel. It features a matte black slide with rear serrations and fixed sights: a white-dot front and a white-outline U-notch rear. Standard capacity is 13+1 with the included OEM magazines.
Gen4 ergonomics include the RTF grip texture with finger grooves for consistent purchase and an enlarged, reversible magazine release to accommodate different shooters and reload techniques. The frame is polymer with two cross pins above the trigger, and it integrates the Glock Universal accessory rail with one cross slot.
The barrel uses polygonal rifling with a 1:15.75 RH twist, optimized for .45 Auto. The rifling and bore are clean and well-defined, supporting the pistol’s excellent mechanical condition.
This is a USA-made example with clear provenance: the slide is marked "GLOCK 21 Gen4 USA 45 Auto," the frame is molded "MADE IN USA GLOCK, INC., SMYRNA, GA.," and the barrel hood carries ".45 Auto" with the Glock logo. A Pentagon "P" proof/inspection mark is present on the slide, and the serial appears on the slide, frame serial plate, and right-side slide window.