Answers for What is the difference in reticle between the 5.56 FFP and the 5.56/.308? Why is First Focal Plane important when the magnification if fixed at 3x?

Primary Arms SLx 3x MicroPrism Red Dot Sight

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Answered by Hunter, Gear Expert, from OH, United States, on August 18, 2022

The Primary Arms The SLx 3x MicroPrism Red Dot Sight model 710036 and model 710040 are not FFP red dots, that is is a typo. However, the model 710036 has an ACSS reticle designed for use with 5.56/.223 and .308. The model 710040 has an ACSS reticle designed for 7.62x39 and 300 Blackout.

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Answered by Ben, member, from NV, United States, on November 25, 2022

FFP is an error. Model 710036 and 710054 has its reticle 'zeroed' in yards. Model 710038 has a reticle 'zeroed' in meters.

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Answered by Tim, member, from FL, United States, on September 15, 2022

The difference between the two are the distance marks are set for the different calibers.

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Answered by Panama Jack, member, from FL, United States, on May 27, 2026

Why is the WRONG/TANGENTIAL answer marked as EXPERT? The second response (Ben's answer) is actually the only correct and on point response. The difference between these two model numbers is that the 710036 is marked in yards, and the 710038 is marked in meters.

The "FFP" listing is actually SKU: PA-SLX-3XMP-RAPTOR-5MP MPN: 710038 (MP = meters)
The "5.56/.308" listing is actually SKU: PA-SLX-3XMP-RAPTOR-5YP MPN: 710036 (YP = yards)

btw: "FFP" is definitely NOT the only typo/wrong info listed for these PA optics. I would strongly recommend using the PA site and/or contacting PA customer service to get accurate specs.

Good Luck!

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What is the difference in reticle between the 5.56 FFP and the 5.56/.308? Why is First Focal Plane important when the magnification if fixed at 3x? — 4 Answers