Head to head
Aimpoint ACRO P-2 vs Holosun EPS vs 509T
Three enclosed pistol optics with different footprints: Aimpoint’s Acro interface, Holosun’s K footprint (EPS), and Holosun’s 509T footprint. Metric and imperial figures are quoted exactly as each maker lists them. Checked November 4, 2026.
At a glance
- Aimpoint ACRO P-2
- Holosun EPS RD-2
- Holosun HE509T-X2
| Spec | Aimpoint ACRO P-2 | Holosun EPS RD-2 | Holosun HE509T-X2 |
|---|---|---|---|
| Window / clear aperture | Clear aperture 15 × 15 mm | 0.90″ × 0.63″ | 0.66″ × 0.9″ |
| Body dimensions | 47 × 33 × 31 mm / 1.9 × 1.3 × 1.2 in (L × W × H) | 1.63″ × 1.19″ × 0.99″ | 1.6″ × 1.16″ × 1.13″ |
| Weight | 61 g / 2.2 oz (sight only) | 1.4 oz (body) | 1.27 oz (body) |
| Battery | CR2032 | CR1620, side tray | CR1632, side tray |
| Battery life | 50,000 hours on setting 6 of 10 | 50,000 hours (setting 6) | 50,000 hours (setting 6) |
| Footprint (maker wording) | Acro interface | Direct Mount K Footprint; RMR-to-K adapter included | Direct Mount 509T Footprint; RMR adapter available |
| Source (checked Nov. 4, 2026) | aimpoint.com ACRO P-2 | holosun.com/products/eps-rd-2 | holosun.com/products/he509t-x2-gd |
Aimpoint lists clear aperture in millimeters. Holosun lists window size in inches. Those are the makers’ own labels, not a conversion we invented.
Which to pick (on paper)
- If your slide or plate is cut for Acro: the ACRO P-2. Aimpoint lists the Acro interface and a 15 × 15 mm clear aperture.
- If your slide is K-cut (or you will use Holosun’s RMR-to-K plate): the EPS RD-2.
- If your slide is cut for 509T: the HE509T-X2. Holosun lists a 509T footprint and an available RMR adapter.
We have not range-tested these; facts below are from the makers.
Related: EPS vs EPS Carry, EPS Carry vs 407K, 507C vs 507K, footprint chart, enclosed vs open emitter, SCS Carry vs EPS, ARO-CORE vs EPS, Aimpoint Duty RDS vs Holosun 510C, Aimpoint ACRO P-2 vs Steiner MPS 2.0, Holosun EPS vs Trijicon RMR Type 2, Aimpoint Acro C-2 vs Acro P-2, Holosun HE509T-X2-RD vs Aimpoint Acro P-2, all comparisons.
Frequently asked questions
What footprint does the Aimpoint ACRO P-2 use?
Aimpoint lists the ACRO P-2 as using the Acro interface. It is not an RMR, K, or 509T cut.
Does the Holosun EPS share a footprint with the ACRO P-2?
No. Holosun lists the EPS as Direct Mount K Footprint (with an RMR-to-K adapter included). Aimpoint lists the ACRO P-2 as Acro interface.
What battery does the Aimpoint ACRO P-2 use?
A CR2032. Aimpoint rates battery life at 50,000 hours on setting 6 of 10.
Sources
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