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Aimpoint ACRO P-2 vs Steiner MPS 2.0

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

Both are enclosed pistol red dots on the Aimpoint ACRO footprint. The biggest cited differences are weight and water rating: Aimpoint lists 61 g (2.2 oz) and submersion to 35 m (115 ft); Steiner lists 2.32 oz and 20-meter waterproof protection. Figures are from each maker’s product page, checked November 5, 2026. The original MPS page is no longer on Steiner’s site, so this page covers the current MPS 2.0.

At a glance

Spec (maker label)	Aimpoint ACRO P-2	Steiner MPS 2.0
Dot size	3.5 MOA	3.3 MOA (item 8700000040) or 2 MOA (item 8700000042)
Window	Clear aperture: 15 × 15 mm	Clear Objective Lens Diameter: 21x16 mm
Size (L × W × H)	47 × 33 × 31 mm / 1.9 × 1.3 × 1.2 in	Not listed on product page
Weight	61 g / 2.2 oz (sight only)	2.32 oz
Battery	CR2032, 3V, Lithium	CR2032
Battery life (maker wording)	50,000 h at daylight setting 6 (15,000 Lux, room temperature)	Up to 90,000 hours at brightness level 4; 27,000 hours at maximum brightness
Brightness settings	4 night vision compatible settings and 6 daylight settings	8x manual brightness control; 6 day/night modes; 2x NV compatible modes
Water rating	Water resistant 35 m / 115 ft; “Submersible to 35 meters (115 feet)”	“20-meter waterproof protection”
Mounting	Mounting platform: Acro interface (integrated)	Mount: ACRO Platform; “Aimpoint® ACRO mounting footprint”
Source (checked Nov. 5, 2026)	aimpoint.com ACRO P-2	steiner-optics.com MPS 2.0

Both runtime figures are quoted at different brightness settings and settings are numbered differently by each maker, so they are not a like-for-like comparison. Aimpoint’s “clear aperture” and Steiner’s “Clear Objective Lens Diameter” are each maker’s own labels; we have not verified how each is measured. Aimpoint’s weight is stated as sight only; Steiner’s page does not say what its 2.32 oz includes. Steiner offers two dot sizes under separate item numbers with identical listed specs otherwise. We list no price.

Which to pick (on paper)

If the lowest listed weight and deepest water rating matter: the ACRO P-2 at 61 g (2.2 oz) and 35 m, against 2.32 oz and 20 m.
If runtime is the deciding number: Steiner lists up to 90,000 hours (level 4) against Aimpoint’s 50,000 h (setting 6); check the setting before comparing.
If you want a choice of dot size: the MPS 2.0 lists 2 MOA and 3.3 MOA models; the ACRO P-2 page lists 3.5 MOA.
If you need a stated body size: Aimpoint lists 47 × 33 × 31 mm; Steiner’s product page lists none.
If you already have an ACRO-cut slide or plate: both makers state the ACRO footprint.

We have not range-tested these; facts below are from the makers.

Frequently asked questions

Do the Aimpoint ACRO P-2 and Steiner MPS 2.0 share a footprint?

Aimpoint lists the ACRO P-2 with an integrated Acro interface, and Steiner lists the MPS 2.0 on the ACRO Platform, citing the Aimpoint ACRO mounting footprint.

Which is lighter?

Aimpoint lists 61 g (2.2 oz) sight only for the ACRO P-2. Steiner lists 2.32 oz for the MPS 2.0.

What dot sizes are available?

Aimpoint lists a 3.5 MOA dot for the ACRO P-2. Steiner lists the MPS 2.0 in 3.3 MOA (8700000040) and 2 MOA (8700000042).

Aimpoint ACRO P-2 vs Steiner MPS 2.0

At a glance

Which to pick (on paper)

Frequently asked questions

Sources

Keep exploring

At a glance

Which to pick (on paper)

Frequently asked questions

Sources

Keep exploring

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