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Although military supply systems classify this part as a "Knob" or "Dial-Knob Lock," it is actually the Safety Block used on the AN/PEQ-2A mode selector. The reversible block is installed with either the blue or black side facing outward depending on the desired operating configuration. Army documentation identifies the blue-side-up orientation as the training configuration, which mechanically prevents access to the non-eye-safe high-power modes.
Item Details
- Manufacturer: L3 Insight Technology
- Part Number: ITP-022
- NSN: 5355-01-454-4026
- Description: Safety Block
- Application: AN/PEQ-2A TPIAL
- Genuine U.S. Military surplus
- Packaged by Rock Island Arsenal
- Blue/Black reversible configuration
Condition
- Surplus item.
- New in Rock Island Arsenal original packaging, unopened.
Ideal replacement component for restoring or maintaining an original AN/PEQ-2A laser aiming device or for military clone builds requiring authentic OEM components.
Keywords: PEQ-2A, TPIAL, Insight Technology, L3, Safety Block, ITP-022, NSN 5355-01-454-4026, military surplus, OEM replacement part.
- Figure 3-1a – Safety Block in Training Mode (Blue side up)
- Figure 3-1b – Safety Block in Tactical Mode (Black side up)
The manual also states:
- Blue side up prevents access to the non-eye-safe modes:
- AIM HI
- DUAL LO/HI
- DUAL HI/HI
- Using a 0.050-inch Allen wrench, the block is removed, flipped over, and reinstalled with the black side up to enable all selector positions.
Even more interesting...
The manual contains an important note that explains your part's shape:
"Safety Block should not be removed from TPIAL. The Safety Block is removed from the following figure for clarity purposes only."
LOC: 8.1.26/eb3/endcap isle2/3
