Springfield Armory Echelon 9mm, 4.5 U-Notch, 5 in Threaded Barrel with Rook Precision Compensator, VIS Optic-Cut, 21+1, Black
This full-size Springfield Armory Echelon 9mm comes configured with an extended 5 in threaded barrel, a Rook Precision compensator, and a Rook Precision 8 lb recoil spring. It includes the original non-threaded barrel, five magazines, factory box with matching end label, soft case, manual, and the serial-matched factory test target. The pistol features the Echelon’s serialized Central Operating Group chassis and VIS optics-mounting arrangement with the cover plate installed.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are some minor and superficial scratches and blemishes present. The bore is clean and shiny.
What’s Included
- Factory Springfield Armory Echelon box with matching end label (model code EC9459B-U, serial-matched)
- Springfield Armory soft zippered pistol case
- Original Springfield Armory Echelon manual
- Original non-threaded barrel (uninstalled)
- Threaded barrel (installed)
- Compensator with winged logo engraving (installed)
- Captured recoil-spring assembly (uninstalled)
- Factory 10-meter test target (serial-matched)
- Three 21-round magazines and two 16-round magazines (steel double-stack; mix of standard and extended baseplates)
The pistol is currently set up with a threaded, extended, hammer-forged 5 in barrel and a Rook Precision compensator featuring an octagonal front face, a single top port, and a winged logo on the underside. A Rook Precision 8 lb recoil spring is installed to complement the compensated configuration, while the original captured recoil-spring assembly is included uninstalled.
Core Echelon features are present, including the removable serialized Central Operating Group chassis and the Variable Interface System optics-mounting arrangement with the cover plate installed. The slide is steel with a Melonite/nitride matte black finish, forward trench relief ahead of the ejection port, and front and rear grasping serrations. Bilateral slide stops are standard.
The frame is a black polymer unit with textured grip panels and a 1913/Picatinny accessory rail machined with four slots. Iron sights include a high-visibility front dot and a U-notch rear, matching the 4.5 U-Notch submodel designation.
The hammer-forged barrel uses a 1:10 twist, and the pistol is chambered in 9mm Luger. Capacity is 21+1 with the extended magazines, and this example ships with three 21-round and two 16-round steel double-stack magazines for flexibility at the range or in duty-sized carry roles. Country of origin is Croatia (manufactured by HS Produkt in Karlovac; imported by Springfield Armory, Geneseo, IL), and the manufacturer part number is EC9459B-U.