SIG Sauer Optics
SIG Sauer ROMEO5
Specs, variants & prices
SIG Sauer currently makes 8 versions of the ROMEO5 optic, and still lists one discontinued version on its site. Listed lengths run from 2.7" to 6". Magnification options are 1x and 1X / 3X. SIG Sauer's suggested retail prices run from $139.99 to $499.99, and stores set their own prices from there. The table below lines up every version so you can compare them at a glance.
What versions of the SIG Sauer ROMEO5 are there?
8 current and 1 discontinued version. Specs and measurements are SIG Sauer's own.
ROMEO5 1x20MM — Red 2 MOA Dot
—- Model / part #
- SOR52001
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Red 2 MOA Dot
- Overall length
- —
- Weight
- 5.1 oz
- Finish
- Black
- Details
- Height: 38.6 mm · Length: 62.7 mm · Battery: (1) CR2032
- MSRP
- $139.99
- Status
- Current
ROMEO5 GEN II 1x20MM — Green 2 MOA Dot
- Model / part #
- SOR5102
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Green 2 MOA Dot
- Overall length
- —
- Weight
- 5.5 oz
- Finish
- Black
- Details
- Waterproof: IPX-7 · Height: 61.5 mm · Length: 69.7 mm · Battery: (1) CR2032
- MSRP
- $159.99
- Status
- Current
ROMEO5 GEN II 1x20MM — Red 2 MOA Dot
- Model / part #
- SOR5101
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Red 2 MOA Dot
- Overall length
- —
- Weight
- 5.5 oz
- Finish
- Black
- Details
- Waterproof: IPX-7 · Height: 61.5 mm · Length: 69.7 mm · Battery: (1) CR2032
- MSRP
- $149.99
- Status
- Current
ROMEO5 GEN II AND JULIET3-MICRO COMBO KIT — Red 2 MOA Dot
—- Model / part #
- SORJ5101
- Magnification
- 1X / 3X
- Objective
- 20 mm
- Reticle
- Red 2 MOA Dot
- Overall length
- 5.9"
- Weight
- 15.4 oz
- Finish
- Black
- Details
- Height: 70 mm · Battery: (1) CR2032
- MSRP
- $299.99
- Status
- Current
ROMEO5 GEN II ELITE 1X20MM — Quad Ballistic Circle Dot 2.0
- Model / part #
- SOR5105
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Quad Ballistic Circle Dot 2.0
- Overall length
- 2.7"
- Weight
- 5.5 oz
- Finish
- Black
- Details
- Waterproof: IPX-7 · Height: 2.4" · Battery: (1) CR2032
- MSRP
- $199.99
- Status
- Current
ROMEO5X GEN II COMPACT RED DOT SIGHT, 1X20MM, 2 MOA RED DOT, 0.5 MOA ADJ, AAA, M1913, BLACK — Red 2 MOA Dot
—- Model / part #
- SOR5X101
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Red 2 MOA Dot
- Overall length
- —
- Weight
- 6.1 oz
- Finish
- Black
- Details
- Adjustment: 1.0 MOA · Length: 107 mm · Height: 73 mm · Battery: (1) AAA
- MSRP
- $199.99
- Status
- Discontinued
ROMEO5X GEN II ROSE — Red 2 MOA Dot
—- Model / part #
- SOR5X171
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Red 2 MOA Dot
- Overall length
- —
- Weight
- 6.1 oz
- Finish
- Black / Rose Gold
- Details
- Waterproof: IPX-7 · Height: 73 mm · Length: 107 mm · Battery: (1) AAA
- MSRP
- $169.99
- Status
- Current
ROMEO5X-AMR COMBO KIT — Quad Ballistic Circle Dot 2.0 Automatic Modified Reticle
—- Model / part #
- SORJ5XAMR01
- Magnification
- 1X / 3X
- Objective
- —
- Reticle
- Quad Ballistic Circle Dot 2.0 Automatic Modified Reticle
- Overall length
- 6.0"
- Weight
- 17.2 oz
- Finish
- Black
- Details
- Waterproof: IPX-7 · Height: 2.5" · Battery: (1) AAA
- MSRP
- $499.99
- Status
- Current
ROMEO5XDR GEN II 1x20MM — Dual Reticle: 2 MOA Dot or Circle Dot
—- Model / part #
- SOR5X201
- Magnification
- 1x
- Objective
- 20 mm
- Reticle
- Dual Reticle: 2 MOA Dot or Circle Dot
- Overall length
- 4.2"
- Weight
- 6.4 oz
- Finish
- Black
- Details
- Height: 2.9" · Battery: (1) AAA
- MSRP
- $229.99
- Status
- Current
How much does a SIG Sauer ROMEO5 cost?
SIG Sauer's suggested retail prices run from $139.99 to $499.99, depending on the version. Tap “See prices” next to any version to see what retailers are asking.
Can you buy one in California or Massachusetts?
SIG Sauer leaves California and Massachusetts blank for this product. Some states limit which accessories a dealer can sell. State rules change, so check our California and Massachusetts pages before you buy.
What's the latest on the ROMEO5?
Nothing new on the ROMEO5 lately.
Specs from SIG Sauer, checked April 26, 2026 (source). SIG Sauer's site blocks scripted requests, so this table was read from a saved copy of the product page. A few UPCs come from retailer listings, since SIG Sauer doesn't publish them for every version. Spot a mistake? Let us know and we'll fix it. SIG Sauer is a trademark of its owner, listed for identification only. Firearms Almanac isn't affiliated with SIG Sauer.