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Compare factory optic-ready pistol configurations.
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Select two duty pistols
Step 3
Review the differences
“Not documented” means Known Ground has not verified that field. It is not a zero, “none,” or compatibility claim.
| Attribute | Springfield ArmoryEchelon 4.5Specs checked Jul 23, 2026 | Beretta92X RDOSpecs checked Jul 23, 2026 |
|---|---|---|
| Typical price | Not documented | Not documented |
| Weight | 23.9 oz with flush magazine | 33.3 oz unloaded |
| Overall dimensions | 8.0 × 1.2 × 5.5 in | 8.5 × 1.5 × 5.4 in |
| Product format | pistol | pistol |
| Mount / compatibility | Springfield Variable Interface System | Beretta 90 Series RDO plate system |
| Catalog status | current | current |
| Accessory rail | Not documented | MIL-STD-1913 |
| Action | Striker-fired | Double-action/single-action |
| Barrel | Hammer-forged steel, Melonite finish, 1:10 twist | Not documented |
| Barrel length | 4.5 in | 4.7 in |
| Caliber | 9 mm | 9×19 mm |
| Capacity | 17+1; 20+1 with extended magazine | 18 rounds; 10, 15, or 17-round configurations |
| Controls | Fully ambidextrous | Ambidextrous slide-mounted decocker/safety or decocker-only, by model |
| Frame | Polymer medium grip module | Aluminum Vertec frame |
| Grip | Not documented | Vertec panels with wraparound grip included |
| Height with extended magazine | 6.5 in | Not documented |
| Operating group | Serialized Central Operating Group | Not documented |
| Operating system | Not documented | Short recoil with falling locking block |
| Optics interface | Variable Interface System direct-mount pin system | Beretta 90 Series RDO plate system |
| Recoil system | Captive | Not documented |
| Safety | Not documented | Automatic firing-pin block |
| Sights | Tritium/luminescent front; Tactical Rack U-Dot rear | Removable front and rear sights |
| Slide | Billet machined, Melonite finish, optics ready | Steel RDO slide |
| Weight with extended magazine | 24.3 oz | Not documented |
Editorial context
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Echelon 4.5: Factory Variable Interface System configuration.
92X RDO: Factory RDO configuration.