LPA SPL17SS Luminova Sight Set for Ruger Mark IV 22/45 Lite – Luminova

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LPA SPL17SS is a micrometrically adjustable pistol sight set for SIG-Sauer Pistols 1911 .22 L.R.. SPL series, sight picture Luminova, and scope of delivery sight set with rear sight and 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, usable as a matched sight set.
System chain: SIG-Sauer Pistols 1911 .22 L.R. → confirmed rear sight/frame mount → LPA SPL17SS → supplied front sight → sight picture Luminova → controlled zero point.


LPA code: SPL17SS

Series: SPL

Compatibility: SIG-Sauer Pistols 1911 .22 L.R.

Scope: sight set with rear sight and front sight

Sight picture: Luminova

Adjustment: height and windage according to series/source description

What distinguishes the LPA-SPL series
compact, micrometrically adjustable Luminova sight set for the designated pistol platform. Carry-Sight series made from MIM/CNC with flat profile and hardened click screws.
The SPL series takes over elevation and windage correction via the confirmed micrometer/click mechanism. The available adjustment range depends on correct basic mounting 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 Luminova
Luminova is photoluminescent: the markings are excited by a light source and then emit the stored brightness for a limited time. It is not tritium and not permanently self-illuminating inserts.
Practical consequence: evenly excite with light before intended use and realistically plan the decreasing glow duration. Do not leave cleaning agents on luminous surfaces.
The sight picture changes perception, not mechanical compatibility. SPL17SS remains tied to the series, firearm mount, and scope of delivery of this SKU.

Four decisions before ordering


Firearm and mount: The designation SIG-Sauer Pistols 1911 .22 L.R. must match the actual rear sight/frame mount.

Exact version: SPL17SS stands for SPL series with sight picture Luminova. A different end code can change scope of delivery or contrast picture.

Rear sight and front sight: Rear sight and front sight belong together with this SKU; both determine sight height and sight picture.

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

Only when these four points match is the LPA micrometer adjustment a usable advantage. A sight picture that glows temporarily after light excitation depends on 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 o
without abbreviation
LPA SPL17SS fits exclusively to the confirmed counterpart SIG-Sauer Pistols 1911 .22 L.R. . 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 SPL17SS 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 series designation SPL.
This SKU includes rear sight and front sight together. The components form a coordinated height and sight picture system.

Installation and mechanical fit
The installation is done on the rear sight/dovetail or cut mount designated for SIG-Sauer Pistols 1911 .22 L.R. . Similar looking milling cuts are not automatically dimensionally identical.
For the explicitly matching weapon mount, the source describes the installation without additional milling work. This is not an approval for other models; individual tolerances and already processed slides may require adjustment.
Follow mounting direction and support surfaces from weapon/LPA instructions; do not guess based on previous disassembly direction.
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.
Rear sight and front sight belong together as a height pair with this SKU. Install both components and only then assess the usable adjustment range.

Our assessment
LPA SPL17SS makes sense for shooters who want to build a mechanically adjustable sight with a glow-in-the-dark sight picture activated by light specifically on SIG-Sauer Pistols 1911 .22 L.R. .
Do not buy if Luminova must be activated by light, glows only temporarily and is not tritium. Also unsuitable if permanent luminosity without prior light activation is needed or the existing mount does not clearly match SPL17SS.

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
SPL17SS is intended for SIG-Sauer Pistols 1911 .22 L.R. . Model family, generation, slide/frame version and rear sight cut must all match. A similar manufacturer designation is not enough.

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

Practical tip: Treat front sight height as part of the system
The front sight delivered with SPL17SS forms a coordinated height pair with the rear sight. Do not mix components with other LPA sets without confirmed approval.

Practical tip: Use Luminova correctly
Activate evenly with light before intended use and realistically plan the decreasing glow duration. Do not leave cleaning agents on luminous surfaces. Limit: This version is not the right choice if permanent luminosity without prior light activation is required.

Practical tip: Document changes
After zeroing, note distance, ammunition and click changes. With SPL17SS never change multiple adjustment directions simultaneously if the cause of a deviation is not yet clear.

Controlled zeroing and adjustment
Unload weapon completely after installation initially on a firm sight base, free slide/cylinder movement and
check 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 rotation direction from the LPA manual.
Since SPL17SS includes rear sight and front sight as a set, the combined sight height is evaluated. If the adjustment reaches its stop, do not turn further; first clarify mounting, front sight height, firearm fit, and ammunition.
After confirming zero, do not tighten adjustment screws "just to be safe." Control marks and documented click positions help detect later movement.

Contents and additionally required parts
Confirmed or assigned to the SKU: sight set with rear sight and front sight; Allen key and/or adjustment screwdriver according to source description.
Not included: firearm and mounting tools outside the confirmed contents; firearm; ammunition; sight pusher or other mounting tools unless explicitly stated otherwise. Product images may show firearm or complete sight image, although only the designated component is sold.

Comparison and suitable alternatives: SPL uses photoluminescent Luminova markings. SPF and TTF work with fiber optics; black or white-outline versions set different contrast priorities. Within the same series, SKUs mainly differ by firearm fit, front sight contents, and sight picture.
LPA SPF17SS fiber optic sight set for SIG Sauer pistols 1911 .22 L.R. – fiber optic
LPA SPS17SS30 micrometer sight set for SIG Sauer pistols 1911 .22 L.R. – 3-dot
LPA SPL20SS Luminova sight set for SIG Sauer pistols P220/225/226/228/229/320 – Luminova

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: SPL17SS

Series: SPL

Product type: micrometrically adjustable pistol sight set

Confirmed fit: SIG Sauer pistols 1911 .22 L.R.

Sight picture: Luminova

Contents type: sight set with rear sight and front sight

Source version: "SPL", incl. front sight

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

FAQ
For which firearm is LPA SPL17SS intended? For SIG Sauer pistols 1911 .22 L.R. in the corresponding rear sight/frame version. Is a front sight included? Yes, this SKU is listed as a sight set with front sight. 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 Luminova sight picture mean? Luminova stores previously absorbed light and glows for a limited time afterward. It is not a permanently self-luminous tritium system. What distinguishes this series from alternatives? SPL uses photoluminescent Luminova markings. SPF and TTF work with fiber optics; black or white-outline versions set different contrast priorities.