Tested Pistol Red Dots (L to R): Trijicon RMR Type 2, Leupold Deltapoint Pro, Burris Fastfire 3, Vortex Venom. X-Series (X-Compact, X-Carry, X-Full, M17, M18) X-Series w/ Romeo1Pro Cut to RMR / SRO / Holosun Adapter Plate With Rear Dovetail; X-FIVE / M17 / M18) w/ R1P/DPP Cut to RMR / SRO / Holosun Adapter Plate W/ 10-8 Rear Sight High-End Optic The ROMEO1PRO is also IPX-7 rated for complete water immersion up to 1 meter. It’s available with either a 3 MOA or 6 MOA dot. The only negative to the RMR is price but its currently $350 at Cabelas shipped ($303 if you buy GCs from raise.com and even less if you use cashback sites.) With our initial groups established, we moved on to test number two – a quick succession of rapid heating and cooling. We hands-on review four of the most popular and rugged red dots available. As 407K/507K feature a modification of the Shield RMS/SMS footprint, it would be best to contact Sig Sauer directly and inquire whether any modifications to the handgun are necessary. Sig Sauer Romeo 8 Initial Group. Assuming the new lower prices of the RMR, the impossibility of finding a Romeo1 and the high RX price, I would suggest going the milled P320 route and add the RMR. Swampfox Sentinel vs RomeoZero vs Shield SMS2 Red Dot Showdown on the bench today. SIG Sauer Romeo Series. At this point I think I have tried all the available options (obviously not the pro but have used the normal R1 on a 320 slide) and the best is really to have a slide milled for an RMR. The new cover is a huge improvement over the cheap, floppy lens cover that came with the original ROMEO1. The mounting footprint is the same and SIG notes it will fit the optics-ready P320 X-Five Legion. Deltapoint Pro 25.7mm x 17.5mm; 1.01” x 0.68” Vortex razor 27.8x17.4 Vortex venom 26.3x16.3 vortex viper 17.5x24 fastfire3 is 21mm x 15mm rmr is 22mm w x 16mm h rts2 25mm w x 22mm h c-more slideride 29mm romeo3 25 wide x 21 h romeo1 30 wide x 16 h J point 21.5mm w x 15mm h Cmore > rts2/romeo3 > deltapoint Trijicon on Romeo. From what I’ve heard, Sig Sauer Romeo 1 Pro should have the same footprint as Leupold DPP (the standard DPP has a unique footprint). The Romeo1 Pro (MSRP: $519.99) is dimensionally identical to the Romeo1, with the exception of a slight (maybe 1/64-inch) extension on the lower front end. Its aircraft grade aluminum housing ensures corrosion resistance under the harshest environments, and a new upgraded point-source emitter provides increased brightness in day or night conditions with 12 brightness settings. The Romeo 1 has a feature SIG refers to as MOTAC™ (Motion Activated Illumination). The ROMEO1PRO brings a new level of durability and performance to the miniature open-reflex red dot sight. This is a discussion on Trijicon on Romeo within the Sig Sauer Optics & Electronics forums, part of the SIG Sauer Forum category; I picked up a Trijicon RMR though Cabela's sale and want to play around with it on a pistol. I haven't yet found an adapter plate for the M17 to use an RMR which allows a rear sight and some form of backup irons. V4 MIL/LEO MOS Sig Sauer Romeo1 Pro; Aimpoint ACRO GLOCK MOS Adapter; SIG SAUER. ... Sig Romeo 1 needs to be added to the list. 2 years ago Reply. I'm taking a look at three of the micro red dot offerings available to fit small pistols. Bimmerland. The three I'm looking at are the Swampfox Optics Sentinel, the Sig Sauer RomeoZero and the Shield Sights SMS2. I know at least 1 guy personally, and have heard from others on line that have P320RX with the Romeo 1 RMR. SIG also includes a nice thick, well-fitting slip-on rubber lens cover. 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