Springfield Armory XD Mod.4 OSP 9mm Luger, Full-Size, 4" Melonite Barrel, 16+1 Capacity
This full-size XD Mod.4 OSP stands out with a forged steel slide, a 4" hammer-forged Melonite barrel, and a factory OSP optics-cut slide with cover plate. It features steel sights with a red fiber-optic front, an ambidextrous magazine release, and a MIL-STD-1913 accessory rail. Condition is excellent, and the serials on the frame and barrel match the factory box label.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal signs of prior use. The bore is clean and shiny.
What's Included
- Springfield Armory factory cardboard box with matching label (SKU XDDG9101B-M4)
- Original manual
- 1x 16-round steel magazine with witness holes
The OSP slide is cut at the factory for mini red dots and includes a cover plate, giving you a ready-to-mount interface while maintaining clean lines when no optic is installed. Front and rear cocking serrations provide positive purchase for chamber checks and slide manipulation.
The 4" barrel is hammer-forged from steel and finished in Melonite, paired with a forged steel slide in Melonite black. The 1:10 twist supports common 9mm loads, and the full-size format delivers a 16+1 capacity.
Sight picture comes from durable steel sights: a red fiber-optic front and a steel rear sight. Controls are straightforward and modern, with a trigger featuring an integral safety and an ambidextrous magazine release.
Safety features include a grip safety and trigger blade safety, plus both a loaded chamber indicator and a striker-status indicator. The black polymer frame uses aggressive molded texturing for a secure hold, and the MIL-STD-1913 accessory rail has three slots for compatible lights or accessories.
Manufactured by HS Produkt in Croatia for Springfield Armory, this pistol bears the correct import and manufacturer markings. The serial numbers on the frame and barrel match the factory box label, and the package includes one steel, double-stack 16-round magazine with witness holes.

