5x SLx Microprism Primary Arms Review

Published on August 18, 2023
Duration: 21:55

The Primary Arms SLx 5x Microprism offers a lightweight, magnified optic with a versatile ACSS Aurora reticle. However, the review highlights significant durability concerns, including loss of zero after minor impacts and a flimsy piggyback mount design. While praised for its reticle and daylight bright illumination, its restrictive eye box and potential zero retention issues make it less suitable for demanding use cases.

Quick Summary

The Primary Arms 5x Microprism has a tight 2.7-inch eye relief and a restrictive eye box, potentially causing an awkward shooting stance. Its ACSS Aurora reticle offers BDC, wind holds, and auto-ranging, but durability concerns like zero loss after impacts and a flimsy piggyback mount are noted.

Chapters

  1. 00:00Introduction to Prism Optics
  2. 00:32Reliability Issues: Losing Zero
  3. 01:32Piggyback Mount Critique
  4. 03:59SLx Microprism Line Comparison
  5. 04:44Brightness and Battery Life
  6. 05:35Mounting and Durability Trade-offs
  7. 06:46Eye Relief and Eye Box Analysis
  8. 09:06Reticle Analysis: ACSS Aurora
  9. 11:35The 'Eye Feel' and Use Cases

Frequently Asked Questions

What are the main durability concerns with the Primary Arms 5x Microprism?

The Primary Arms 5x Microprism reportedly lost zero twice during testing, once during transport and again after a deliberate impact. The piggyback mount is also criticized for being flimsy and prone to shifting zero.

What is the eye relief and eye box like on the 5x Microprism?

The 5x model features a tight 2.7-inch eye relief and a very restrictive eye box, which can lead to an awkward head position, similar to an ACOG but with a smaller image.

What reticle does the Primary Arms 5x Microprism use?

The 5x model utilizes the ACSS Aurora reticle, available in Yards or Mil configurations. It includes features like a Bullet Drop Compensator (BDC), wind holds for 5 and 10 mph, and auto-ranging capabilities.

How does the Primary Arms 5x Microprism compare to other prism optics in terms of weight and price?

The 5x Microprism weighs 8.5 oz and costs approximately $400. It shares a similar housing design with flush turrets and adjustable diopters found in the 1x and 3x models.

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