Side-by-side · Manufacturer-published fields only
Springfield Armory Hellcat 3" Micro-Compact vs Springfield Armory Hellcat Pro OSP
Springfield Armory publishes both as Hellcat models. Both are chambered in 9x19mm Parabellum. The Hellcat Pro OSP is ≈15.2 mm / ≈0.6 in longer overall; its barrel is ≈17.8 mm / ≈0.7 in longer; the Hellcat Pro OSP lists 4 rounds more of standard capacity. 2 fields are not comparable — overall height, weight — because the makers publish them on different measurement bases.
Full comparison brief: Hellcat vs Hellcat Pro: Size, capacity, and specs — the sourced write-up, with the measurement caveats explained and common questions answered.
Computed differences06
| Field | Difference |
|---|---|
| Overall length | ≈15.2 mm / ≈0.6 in (Hellcat Pro OSP is greater) |
| Overall width | Not published by both |
| Overall height | Not comparable — Hellcat 3" Micro-Compact: with flush magazine; 4.5 in with the extended magazine; Hellcat Pro OSP: with flush magazine; 5.3 in with the extended magazine |
| Barrel length | ≈17.8 mm / ≈0.7 in (Hellcat Pro OSP is greater) |
| Weight | Not comparable — Hellcat 3" Micro-Compact: with flush magazine, which Springfield does not state is empty; 18.6 oz with the extended magazine; Hellcat Pro OSP: with flush magazine, which Springfield does not state is empty; 21.4 oz with the extended magazine |
| Standard capacity | 4 rounds (Hellcat Pro OSP is greater) |
How these differences are computed: each is the arithmetic difference between the two published figures, and it is only shown where both sources measured the field the same way. Where a source states a measurement basis the other does not match, the row says so instead of subtracting — figures on different bases are not comparable even when the numbers sit side by side. Differences marked ≈ involve at least one figure this directory converted between unit systems, so the difference is no more precise than that conversion.
Published fields, side by side
| Field | Hellcat 3" Micro-Compact | Hellcat Pro OSP |
|---|---|---|
| Manufacturer | Springfield Armory | Springfield Armory |
| Manufacturer size label | Micro-Compact | Not published |
| Directory frame class | micro-compact | Not published |
| Chambering | 9x19mm Parabellum | 9x19mm Parabellum |
| Overall dimensions | ≈length 152.4, height 101.6 mm / length 6, height 4 in (height: with flush magazine; 4.5 in with the extended magazine; width not published) | ≈length 167.6, height 121.9 mm / length 6.6, height 4.8 in (height: with flush magazine; 5.3 in with the extended magazine; width not published) |
| Barrel length | ≈76.2 mm / 3 in | ≈94 mm / 3.7 in |
| Weight | ≈519 g / 18.3 oz (with flush magazine, which Springfield does not state is empty; 18.6 oz with the extended magazine) | ≈595 g / 21 oz (with flush magazine, which Springfield does not state is empty; 21.4 oz with the extended magazine) |
| Standard capacity | 11 rounds | 15 rounds |
| Verification | Source verified 2026-08-12 | Source verified 2026-08-13 |
Full records, with every value beside the source it came from: Springfield Armory Hellcat 3" Micro-Compact · Springfield Armory Hellcat Pro OSP. More from these makers: Springfield Armory.
Reference information only. Not legal, purchasing, training, carry, storage, or assembly advice. Manufacturer technical data are rounded and may change without notice. Spotted an error? Submit a source-backed correction.