LPA TPU22RG18 adjustable micrometer rear sight for Ruger .22 pistol MKII – White Outline

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LPA TPU22RG18 is a micrometrically adjustable pistol rear sight for Ruger KK-Pistole MKII. TPU series, sight picture White Outline, and scope of delivery rear sight without front sight are the key purchase features.

This page does not describe a universal sight. LPA assigns each SKU to a specific firearm/milling or frame mount. Only when this mechanical counterpart fits do the sight picture and micrometer adjustment become relevant.

What is this LPA sight?
Product classification: pistol sight, only usable as a complete sight picture together with a matching front sight.
System chain: Ruger KK-Pistole MKII → confirmed rear sight/frame mount → LPA TPU22RG18 → suitable existing/separate front sight → sight picture White Outline → controlled zero point.


LPA code: TPU22RG18

Series: TPU

Compatibility: Ruger KK-Pistole MKII

Scope: rear sight without front sight

Sight picture: White Outline

Adjustment: height and windage according to series/source description

What distinguishes the LPA TPU series
adjustable replacement rear sight that works with the matching existing factory front sight of the designated pistol. solid CNC-milled steel, hardened click screws, and tapered dovetail.
The TPU series takes over elevation and windage correction via the confirmed micrometer/click mechanism. The available adjustment range depends on correct basic installation and suitable front sight height.
One adjustment corrects the point of impact within its mechanical range. It does not compensate for a crookedly pressed-in rear sight, incorrect front sight height, or unsuitable firearm mount.

Sight picture White Outline
White Outline visually highlights the contour of the rear sight. This can support orientation with changing backgrounds but does not replace a clean alignment of front sight top edge and rear sight top edge.
Practical consequence: keep the white outline clean and do not interpret it as a third aiming point. The decisive factor remains the geometric alignment of front sight and rear sight.
The sight picture changes perception, not mechanical compatibility. TPU22RG18 remains tied to the series, firearm mount, and scope of delivery of this SKU.

Four decisions before ordering


Firearm and mount: The designation Ruger KK-Pistole MKII must match the actual rear sight/frame mount.

Exact version: TPU22RG18 stands for TPU series with sight picture White Outline. A different end code can change scope of delivery or contrast picture.

Rear sight and front sight: No new front sight is delivered; the existing or separately procured front sight must geometrically fit the rear sight.

Mounting limit: For the confirmed mount, the source does not specify any additional milling work.

Only when these four points match is the micrometer adjustment from LPA a usable advantage. a clearly outlined rear sight notch with white contrast contour is a matter of the chosen sight picture; mechanical fit cannot be replaced by this. Anyone wavering between two visually similar variants should therefore first clarify manufacturer code and mount and only then decide between black, dots, White Outline, fiber optic, or Luminova.

Compatibility without abbreviation
LPA TP
U22RG18 fits exclusively to the confirmed counterpart Ruger KK-Pistol MKII. Manufacturer name and similar model number are not sufficient. Slide revision, year of manufacture, factory sight, optics-ready version, or already performed milling work can change the fit.
The code TPU22RG18 is the most precise assignment on this page. When matching with packaging, LPA documents, or existing rear sight, use this code and not just the serial designation TPU.
This SKU includes rear sight without front sight. A suitable existing or separately selected front sight is required for a complete sight picture.

Installation and mechanical fit
Installation is done on the rear sight/dovetail or cut slot designated for Ruger KK-Pistol MKII. Similar looking millings are not automatically dimensionally identical.
For the explicitly matching weapon fit, the source describes installation without additional milling work. This is not an approval for other models; individual tolerances and already processed slides may require adjustment.
For this series description, LPA specifies installation from left to right. Do not transfer this direction to other weapons or already processed slots.
Do not install the sight with uncontrolled hammer blows. A suitable sight pusher or professional clamping and support tools distribute the force on the intended surfaces. Completely unload slide or frame and remove according to weapon instructions before working on the sight mount.
This SKU does not include a new front sight. Height and shape of the existing or separately chosen front sight must match the adjustment range of the rear sight.

Our assessment
LPA TPU22RG18 is suitable for shooters who want to build a mechanically adjustable sight with a clearly defined rear sight cutout with white contrast outline exactly on Ruger KK-Pistol MKII.
Do not buy if TPU contains no front sight and fits only the exactly named pistol or slide mount. Also unsuitable if a glowing fiber/Luminova system or a completely black match sight picture is preferred or the existing mount does not clearly match TPU22RG18.

Black-Raptor short summary: Buy if: LPA code, weapon model/cut, scope of delivery, and desired sight picture fully match. Do not buy if: only manufacturer name or a similar looking dovetail serve as proof of fit.

Product-specific practical tips

Practical tip: Read compatibility up to the milling
TPU22RG18 is intended for Ruger KK-Pistol MKII. Model family, generation, slide/frame version, and rear sight cut must all match. A similar manufacturer designation is not enough.

Practical tip: Installation base before click adjustment
Confirm mount and installation direction before pressing in. The rear sight must run flush and without tilting; do not force material by blows or grinding by eye. Only a mechanically centered and stable basic installation makes later click correction meaningful.

Practical tip: Treat front sight height as part of the system
A front sight is not included. The existing or separately chosen front sight must fit the rear sight height and weapon platform; otherwise, the point of impact lies outside the usable adjustment range.

Practical tip: Use white outline correctly
Keep the white outline clean and do not interpret it as a third aiming point. The geometric alignment of front sight and rear sight remains decisive. Limit: This version is not the right choice if a glowing fiber/Luminova system or a completely black match sight picture is preferred.

Practical tip: Document changes
After zeroing, note distance, ammunition, and click changes. With TPU22RG18 never change multiple adjustment directions simultaneously if the cause of a deviation is not yet clear.

Controlled zeroing and adjustment
Wa
ffe after mounting, first check fully unloaded for solid sight alignment, free slide/cylinder movement, and safe function. Then work at an approved shooting range with appropriate protective and safety equipment.
Start with a defined distance and the same ammunition. A clean group is more meaningful than a single hit. First determine the average point of impact, then correct height or windage in small documented steps. Use the adjustment direction from the LPA manual.
Since TPU22RG18 only guides the rear sight, an incorrect existing front sight can use up the available elevation range. If the adjustment reaches its stop, do not turn further; first clarify mounting, front sight height, weapon fit, and ammunition.
After confirming zero, do not tighten the adjustment screws further "just to be safe." A control mark and documented click position help detect later movement.

Included and additionally required parts
Confirmed or assigned to the SKU: rear sight without front sight; Allen key and/or adjustment screwdriver according to source description.
Not included: suitable existing or separately selected front sight; firearm; ammunition; sight pusher or other mounting tools unless explicitly stated otherwise. Product images may show the firearm or complete sight picture, although only the designated component is sold.

Comparison and suitable alternatives: TPU replaces the factory rear sight and uses the existing front sight. A complete SPS-/SPR-/SPF-/SPL-/TTF set replaces both sight components together. Within the same series, SKUs mainly differ by weapon fit, front sight scope, and sight picture.
LPA TPU22RG07 adjustable micrometer rear sight for Ruger KK-Pistol MKII – Black sight picture
LPA TPU22RG30 adjustable micrometer rear sight for Ruger KK-Pistol MKII – 2-point

Care and function check
Keep sight body, rear sight cutout, and adjustment screws free of sand, powder residue, and dried oil. Do not leave cleaning agents on fiber, Luminova, or click mechanism. After impact or visible movement, confirm zero again.
Check fit in dovetail or cut for lateral movement. Move adjustment screws only within the intended range; a stop is not an invitation to apply more force.

Technical data

Manufacturer: LPA

Manufacturer code: TPU22RG18

Series: TPU

Product type: micrometrically adjustable pistol rear sight

Confirmed fit: Ruger KK-Pistol MKII

Sight picture: White Outline

Included type: rear sight without front sight

Source version: "TPU" White Outline, without front sight

Important fit and safety note: Mount only on fully unloaded firearm and according to LPA/firearm manufacturer instructions. The compatibility list is more binding than product photo or similar model designation. For unclear milling, possible rework, or missing tools, choose professional mounting.

FAQ
For which firearm is LPA TPU22RG18 intended? For Ruger KK-Pistol MKII in the matching rear sight/frame version.
Is a front sight included? No. This SKU is listed as rear sight without front sight; suitable existing or separately selected front sight required.
Is milling required for mounting? For the confirmed fit, the source describes no additional milling. Individual tolerances or different slides remain subject to inspection.
What does the White Outline sight picture mean? The white outline makes the rear sight cutout easier to recognize. For precise alignment, however, the front sight and rear sight top edge remain decisive.
What distinguishes this series from alternatives? TPU replaces the factory rear sight and uses the existing front sight. A complete SPS-/SPR-/SPF-/SPL-/TTF set replaces both sight components together.