Sig Sauer Romeo 1 for sale
Updated · 25 products · 7 in stock · prices refreshed daily
(20)
Sig Sauer P320 XFull 9mm Full-Size Striker-Fired Pistol with ROMEO1 Pro Red Dot
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7"
Caliber:
9×19mm Parabellum
Capacity:
17
Finish Per Color:
Black
(20)
Sig Sauer P320 RXP XCompact 9mm 15rd 3.6" Pistol w/ Romeo1 PRO - 320XC-9-BXR3-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.6"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
(15)
Sig Sauer P320 9mm 17rd 4.7" Pistol w/ Romeo1 PRO - 320F-9-B-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7"
Caliber:
9×19mm Parabellum
Capacity:
17
Finish Per Color:
Black
(20)
Sig Sauer P229 Legion RX Compact 9mm 15rd Pistol w/ Romeo1 Pro - E29R-9-LEGION-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Grey
(12)
Sig P226 ZEV TB 9mm Pistol With Romeo 1 Pro, Black - E26R-9-ZEV-SAO-TB-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.9"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
(20)
Sig Sauer P226 Legion RXP Gray 9mm 4.4" Barrel 10-Rounds Romeo1 Pro
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Grey
(17)
Sig Sauer P226 Legion 9mm 15rd 4.4" Pistol w/ Romeo1 Pro - E26R-9-LEGION-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Grey
(0)
Sig Sauer P320C RX Compact 9mm Pistol with Night Sights and ROMEO1 Optic - 320c-9-BSS-RX
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
(0)
Sig Sauer P320 RX Full-Size 9mm Pistol with Romeo1 Reflex Sight - 320F-9-BSS-RX
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7"
Caliber:
9×19mm Parabellum
Capacity:
17
Finish Per Color:
Black
(0)
Sig Sauer P320 RX 9mm Full-Size Pistol w/ Romeo1 Reflex Sight - 320F-9-B-RX
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7"
Caliber:
9×19mm Parabellum
Capacity:
17
Finish Per Color:
Black
(0)
SIG SAUER P320 Full Size 9mm 4.7in 10rd Semi-Automatic Pistol with Romeo1 Reflex Sight (320F-9-BSS-RX-10)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Black
(0)
SIG SAUER P320 Compact 9mm 3.9in 15rd Semi-Automatic Pistol with Romeo1 Reflex Sight (320C-9-B-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
(0)
SIG SAUER P320 Compact 9mm 3.9in 10rd Semi-Automatic Pistol with Romeo1 Reflex Sight (320C-9-BSS-RX-10)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Black
(0)
Sig Sauer P229 Legion SAO RXP Semi-Auto Pistol with Romeo 1 Pro Optic - 9mm - Legion Gray/Black
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Finish Per Color:
Grey
(0)
Sig Sauer P229 Legion SAO RXP Semi-Auto Pistol with Romeo 1 Pro Optic - 9mm - Black High Checkered G-10
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Finish Per Color:
Black
(0)
SIG SAUER P229 Compact 9mm 3.9in 10rd Semi-Automatic Pistol with Romeo1 Reflex Sight (229R-9-BSS-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Black
(20)
Sig Sauer P226 SAO Legion 9mm 15rd 4.4" Pistol w/ Romeo1 Pro - E26R-9-LEGION-SAO-RXP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Grey
(0)
Sig Sauer P226 Legion SAO RXP Semi-Auto Pistol with Romeo 1 Pro Optic - 9mm - 15 + 1
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
(0)
Sig Sauer P226 Legion RX 9mm Pistol with Romeo1 Optic - E26R-9-LEGION-RX
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
(0)
SIG SAUER P226 Legion 9mm 4.4in 15rd Semi-Automatic Pistol with Romeo1 Reflex Sight (E26R-9-LEGION-SAO-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Grey
(0)
SIG SAUER P226 Legion 9mm 4.4in 10rd Semi-Automatic Pistol with Romeo1 Reflex Sight (226R-9-LEGION-SAO-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Grey
(0)
SIG SAUER P226 Legion 9mm 4.4in 10rd Semi-Automatic Pistol with Romeo1 Reflex Sight (226R-9-LEGION-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
10
Finish Per Color:
Grey
(0)
Sig Sauer P226 Elite 9mm Pistol w/ROMEO1 Reflex Sight - E26R-9-BSE-SAO-RX
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
(0)
SIG SAUER P226 9mm 4.4in 15rd Semi-Automatic Pistol with Romeo1 Reflex Sight (E26R-9-B-RX)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.4"
Caliber:
9×19mm Parabellum
Capacity:
15
Finish Per Color:
Black
Marketplace Insights
★ 4.7/5
based on 132 customer reviews across 25 products from 12 retailers
Exceptional SIG pistol with outstanding trigger, ergonomics and accuracy; overwhelmingly praised by users despite rare quality control and finish concerns.
What customers like
Trigger Quality42%
the trigger is so buttery smooth it makes shooting it a lot of fun
Ergonomics & Grip38%
Fits my hand like it was made out of clay
Accuracy & Performance35%
Right out of the box I was in the eight and nine rings
Reliability28%
I've never had a jam or misfire in all my years of service
Red Dot Optic24%
The Romeo1Pro has made a huge difference
Common concerns
Hard First Trigger Pull5%
I don't like the hard first trigger pull
Finish Durability3%
The coating will likely wear very quickly
Quality Control Issues3%
The slide would not go into battery without assistance
Ammo Feeding Issues2%
had stoppages four or five times as the rounds were feeding
Frequently Asked Questions
Sig Sauer Romeo 1 for sale
What is the difference between Romeo1 and Romeo1 Pro?
Romeo1 Pro upgrades the original with a Leupold Deltapoint Pro-compatible mounting footprint, 20,000-hour battery life, a protective shroud, brighter dot with 12 brightness steps, and more robust construction. The original Romeo1 uses a proprietary footprint and lacks the shroud.
Is the SIG Romeo 1 motion activated?
Yes, the standard SIG SAUER Romeo 1 features MOTAC (Motion Activated Illumination System), which powers the sight on when motion is detected and shuts it off when stationary, extending battery life without requiring manual activation.
Does the Romeo 1 Pro have an auto shutoff?
Yes, the Romeo 1 Pro has MOTAC (Motion Activated Illumination) auto-shutoff. It powers down after detecting no movement for roughly two minutes and wakes when motion resumes. You can also manually power it off by holding the UP or DOWN button for two seconds.
What guns does the Romeo 1 Pro fit?
The Romeo 1 Pro fits SIG SAUER pistols with the PRO RX footprint and many pistols using the DeltaPoint Pro footprint. However, SIG warns it will not fit all DeltaPoint Pro footprints due to variances in recoil boss dimensions. Verify compatibility before purchase.
What footprint does the SIG Romeo 1 use?
The SIG Romeo 1 uses its own proprietary footprint that shares hole and pin patterns with the Leupold DeltaPoint Pro and Shield RMS/SMS. However, recoil boss dimension differences mean it may not fit all DeltaPoint Pro cuts, so verify compatibility with your specific pistol before purchasing.
What battery does the SIG Romeo 1 Pro take?
The SIG Romeo 1 Pro uses a CR1632 battery. Its top-loading design allows replacement without removing the sight from your firearm. Battery life extends several months with MOTAC (motion-activated illumination control) enabled.
What is the battery life of the SIG Romeo 1 Pro?
The SIG Romeo 1 Pro offers approximately 20,000 hours of battery life on a single CR1632 battery. With MOTAC (motion-activated illumination) enabled, real-world runtime extends several months. Actual duration varies by brightness setting and usage frequency.
Is the Romeo 1 Pro waterproof?
Yes, the Romeo 1 Pro carries an IPX-7 rating, meaning it withstands submersion up to one meter for 30 minutes. It is also fogproof and features a protective steel shroud, making it reliable in rain and wet conditions.
Does the Romeo 1 Pro have Shake Awake?
Yes, the Romeo 1 Pro includes Shake Awake. The optic automatically wakes when it detects motion and returns to sleep when still, conserving battery life. This works alongside its 50,000-hour battery life, letting you leave the optic on without worrying about manual shutoff.
What battery does the SIG Romeo 1 take?
The SIG Romeo 1 uses a CR1632 battery. It's a 3-volt lithium cell that loads from the top, allowing replacement without removing the sight from your firearm. Battery life runs roughly 50,000 hours with the MOTAC motion-sensing feature enabled.
Is the SIG Romeo 1 Pro good?
The Romeo 1 Pro is well-regarded for its crisp dot, MOTAC auto-shutoff, and durability in defensive and competition use. It delivers professional-grade performance at a reasonable, accessible price point for a pistol red dot. Most shooters consider it a solid choice that punches above its cost.
Which Sig Romeo is best?
"Best" depends on your use. The Romeo 5 offers the best value for most shooters. The Romeo 1 Pro suits defensive pistols and competition. The Romeo 4 series works well on AR platforms with solar backup. Match the optic to your firearm type and budget.
