Compact red dot with ballistic circle dot reticle and MOTAC


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SIG SAUER Romeo 4T-PRO, 1x20mm, Red Dot Sight, Red Dot Sight, BLACK, SOR44101
Sig Sauer ROMEO4T-PRO Red Dot Sight 1x 20mm Selectable Reticle CR2032 Battery Powered Matte Black
SIG Sauer Romeo4T Pro Red Dot 1x .5 MOA, Black - SOR44101
The Sig Sauer Romeo4T Pro represents Sig's professional-grade tactical red dot, designed to compete directly with premium offerings from Aimpoint while providing features they don't offer. Selected as an issued optic by the FBI and other federal agencies, the Romeo4T Pro delivers exceptional optical clarity, multiple reticle options, and combat-proven durability at a lower price point than European competitors. The "Pro" designation indicates enhanced coatings for improved night vision performance over the standard Romeo4T.
What sets the Romeo4T Pro apart is its Ballistic Circle Dot reticle system, allowing shooters to toggle between a 2 MOA dot, a 2 MOA dot with ballistic holds, a 2 MOA/65 MOA Circle Dot, or all combined—providing flexibility no Aimpoint offers. The holdover points are calibrated for 5.56 NATO and 7.62x51mm NATO, enabling rapid engagement at various distances without manual holdover estimation. Combined with MOTAC motion activation and 50,000 hour battery life, the Romeo4T Pro offers set-and-forget reliability.
Constructed from 7075 aluminum with IPX8 waterproofing (20-meter submersion rated), the Romeo4T Pro handles extreme conditions with confidence. The top-mounted buttons eliminate accidental activation from gear contact, while the Aimpoint Micro footprint ensures compatibility with industry-standard mounts. For professionals requiring night vision compatibility and reticle versatility without Aimpoint pricing, the Romeo4T Pro delivers compelling value.

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Add the Sig Sauer Romeo4T Pro to your build and see how it enhances your platform.
Keep the target at a known distance, then adjust Sig Sauer Romeo4T Pro to see how its published field of view and reticle shape the picture.
Letters are 36, 24, 18, 12 and 8 cm tall. Compare how much detail fits in the view as you zoom.
Fixed 1× magnification
Published window at eye relief. Illustrative housing.
Reticle drawn from the subtensions on this sheet; holds and the BDC table come from it.
Shots land where the solved trajectory puts them, with a group's worth of spread. Dial to walk the reticle onto the group; the next shot re-aims at the target.
Along the range and across it use the same scale. The short center mark shows the object’s width.
A · 1× · 20 ft wide
Published window at eye relief
The lines trace the left and right edges of the view. Zoom in to see a narrower part of the scene.
Reticle drawn from the manufacturer's published subtensions. Housing, glass, brightness and eyebox are simulated.
Open the full range simulator