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Q&A for Primary Arms Classic 21mm Micro Reflex Sight — 6 Questions & 6 Answers

Name Primary Arms Classic 21mm Micro Reflex Sight (4.3)
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Q
credo, member, from IA, United States, asked on May 29, 2024

how well would it mount to a p365 that optic ready ?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on May 31, 2024

The Primary Arms Classic 21mm Micro Reflex Sight will mount directly to an optic ready P365 without the need for any adapter plates.

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Q
John, guest, from GA, United States, asked on October 13, 2023

Well this mount on my sig p250?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on October 17, 2023

Because the P250 does not come optic ready from the factory, the only way you would be able to mount an optic is by having your slide milled, or by using an adapter plate that replaces your rear sight. This particular optic uses the micro RMSc optic footprint. Which means to install it, you would need to use a Leupold Deltapoint Pro adapter plate, or have your slide milled for the Deltapoint Pro footprint. Email us at Techsales@opticplanet.com for further assistance.

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Q
BoreSnake, member, from MI, United States, asked on July 21, 2023

will this mount on the pac2.5 prism scope with the pa picatinny mount?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on July 25, 2023

The Primary Arms Classic Series Micro Reflex Dot Sight does not include a picatinny mount to directly fit picatinny rails. To mount this optic to your Prism optic, you would need to purchase an RMSc/Deltapoint Pro compatible picatinny mount such as the Leupold Deltapoint Pro Cross Slot Mount, which can be found by using the link below:
https://www.opticsplanet.com/leupold-deltapoint-pro-cross-slot-mount.html

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Q
Tim, guest, from IN, United States, asked on June 27, 2023

will this fit on S&W M&PFPC 9mm Carbine

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on June 30, 2023

The Primary Arms Classic Series Micro Reflex Dot Sight could be mounted on the M&P FPC if you use a picatinny mounting base that fits the RMSc footprint. The mount at the link below should work.
https://www.opticsplanet.com/sig-sauer-universal-reflex-sight-riser-mounts.html

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Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on June 02, 2023

The Primary Arms Classic Series Micro Reflex Dot Sight will automatically shut off after 12 hours of continuously running. To turn the illumination back on, you will need to press one of the brightness adjustment buttons and the reticle will reappear.

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Q
Chris, member, from MO, United States, asked on December 10, 2022

Says rmr footprint and then states RMSc. Will this fit rmr cut slide?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on December 13, 2022

The Primary Arms Classic Series Micro Reflex Dot Sight uses the Shield RMSc footprint and will not be compatible with RMR cut slides. Primary Arms has also released an RMR compatible version of this optic which can be found linked below:
https://www.opticsplanet.com/primary-arms-classic-series-mini-reflex-dot-sight.html

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