Springfield Armory Echelon 4.5F Gear Pac 9mm, Black Melonite, Viridian RFX11, 20+1, 4.5 in Barrel
This full-size Echelon 4.5F Gear Pac pairs Springfield Armory's striker-fired 9mm with a factory-installed Viridian RFX11 green dot and a four-magazine loadout. It features the Echelon's removable Central Operating Group chassis, a plate-less VIS direct-mount optic interface, and a hammer-forged, Melonite-treated 4.5 inch barrel, all in a durable black Melonite slide with a polymer frame.
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: Minimal markings from previous handling and use. The bore is bright and clean. Please refer to the photos for a complete view of the item's condition.
What's Included
- Viridian RFX11 green dot sight (installed); Echelon Exclusive footprint
- 1x 20-round magazine and 3x 17-round magazines (steel; extended and flush basepads)
- Springfield Armory-branded soft range bag (Gear Pac)
- Springfield Armory owner's manual
- Factory outer box — Springfield Armory Gear Pac
- Viridian RFX Gear Kit pouch
- Two additional interchangeable backstraps
The Echelon 4.5F Gear Pac offers a turnkey package built around Springfield Armory's full-size 9mm platform and a 4.5 inch, hammer-forged, Melonite-treated steel barrel. The black Melonite slide includes front and rear serrations, top trench relief cuts, and an ejection port chamber view cut for quick status checks.
The pistol's Variable Interface System provides a plate-less, direct-mount interface for optics, and this example includes a Viridian RFX11 micro green dot installed on the Echelon Exclusive footprint. Iron sights remain in place with a standard, high-visibility front and rear sight setup.
Its polymer frame is purpose-built for control, featuring aggressive grip texture, molded index pads, a flared magazine well, and interchangeable backstraps (two extras included) to fine-tune fit. A five-slot 1913/Picatinny accessory rail supports lights or other rail-mounted accessories.
Inside, the striker-fired action uses a flat-faced trigger with an integrated trigger safety. The removable, serialized stainless-steel Central Operating Group (COG) chassis anchors the fire-control system. The pistol is made in Croatia by HS Produkt and imported by Springfield Armory, with a maximum capacity of 20+1 using the included magazines.