LPA SPS17SS6F Micrometer Sight Set for Ruger Mark IV 22/45 Lite – Fiber Optic

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LPA SPS17SS6F is a micrometrically adjustable pistol sight set for SIG-Sauer 1911 .22 l.r.. SPS series, sight picture Fiber-Optic 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 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 1911 .22 l.r. → confirmed rear sight/frame mount → LPA SPS17SS6F → supplied front sight → sight picture Fiber-Optic → controlled zero point.


LPA code: SPS17SS6F

Series: SPS

Compatibility: SIG-Sauer 1911 .22 l.r.

Scope: sight set with rear sight and front sight

Sight picture: Fiber-Optic

Adjustment: height and windage according to series/source description

What distinguishes the LPA-SPS series
micrometrically adjustable match sight set with front sight for the designated pistol platform. MIM/CNC manufactured series with low profile, hardened click screws and tapered dovetail.
The SPS 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 Fiber-Optic
Fiber-Optic collects available light and makes the fiber insert appear brighter. It does not generate its own light and is not tritium. In dark environments without incident light, the effect significantly decreases.
Practical consequence: keep fiber rods clean and do not treat with aggressive solvents. Before mounting, check whether the SKU carries fiber on front sight, rear sight, or both components; the designation of the complete set is decisive.
The sight picture changes perception, not mechanical compatibility. SPS17SS6F 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 1911 .22 l.r. must match the actual rear sight/frame mount.

Exact version: SPS17SS6F stands for SPS series with sight picture Fiber-Optic. 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: a blanket mounting without milling or adjustment work is not confirmed.

Only when these four points match is the micrometer adjustment from LPA a usable advantage. a quickly grasped sight picture highlighted by ambient light 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.
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Compatibility without abbreviation
LPA SPS17SS6F fits exclusively to the confirmed counterpart SIG-Sauer 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 SPS17SS6F 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 SPS.
This SKU includes rear sight and front sight together. The components form a coordinated elevation and sight picture system.

Installation and mechanical fit
Installation is done on the rear sight/dovetail or cut mount designated for SIG-Sauer 1911 .22 l.r. . Similar looking milling cuts are not automatically dimensionally identical.
The source does not confirm universal installation without adjustment. Before pressing in, professionally check the mount, direction, and dimensions.
Use mounting direction and support surfaces from the firearm/LPA manual; 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 firearm manual before working on the sight mount.
Rear sight and front sight belong together as an elevation pair in this SKU. Install both components and only then assess the usable adjustment range.

Our assessment
LPA SPS17SS6F is suitable for shooters who want to build a mechanically adjustable sight with a quickly recognizable, ambient light-enhanced sight picture exactly on SIG-Sauer 1911 .22 l.r. .
Do not buy if SPS is not a universal set; firearm model, milling, rear sight, front sight, and sight picture must match as a common SKU. Also unsuitable if you expect a self-luminous night sight or the lighting conditions do not allow a fiber effect or the existing mount does not clearly match SPS17SS6F.

Black-Raptor short summary: Buy if: LPA code, firearm 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 SPS17SS6F is intended for SIG-Sauer 1911 .22 l.r. . Model family, generation, slide/frame version, and rear sight cut must match together. 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 flush and without tilting; do not force material by blows or grinding 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 SPS17SS6F forms a coordinated elevation pair with the rear sight. Do not mix components with other LPA sets without confirmed approval.

Practical tip: Use fiber optics correctly Keep fiber rods clean and do not wet with aggressive solvents. Before installation, check whether the SKU includes fiber on front sight, rear sight, or both components; the designation of the complete set is decisive. Limit: This version is not the right choice if you expect a self-luminous night sight or the lighting conditions do not allow a fiber effect.

Practical tip: Document changes After zeroing, note distance, ammunition, and click changes. With SPS17SS6F never change multiple adjustment directions simultaneously if the cause of a deviation is not yet clear.

Controlled zeroing and adjustment
Weapon after installation initially fully unloa
check the fixed sight alignment, free slide/cylinder travel, and secure 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 side in small documented steps. Use the rotation direction from the LPA manual.
Since SPS17SS6F 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, weapon fit, and ammunition.
After confirming zero, do not tighten the adjustment screws "just to be safe." A control mark and documented click position 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 the firearm or complete sight picture, although only the designated component is sold.

Comparison and suitable alternatives: SPS combines MIM/CNC manufacturing with a complete match set. TPU, TR, TRT, MPS, and PSE are mostly rear sights without a new front sight. Within the same series, SKUs mainly differ by weapon fit, front sight contents, and sight picture.
LPA SPS20SS6F micrometer sight set for SIG-Sauer P226/320 – fiber optic
LPA SPS17SS30 micrometer sight set for SIG-Sauer pistols 1911.22 L.R. – 3-point
LPA SPS20SS30 micrometer sight set for SIG-Sauer pistols P220/225/226/228/229/320 – 3-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 the 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: SPS17SS6F

Series: SPS

Product type: micrometrically adjustable pistol sight set

Confirmed fit: SIG-Sauer 1911 .22 l.r.

Sight picture: fiber optic

Contents type: sight set with rear sight and front sight

Source version: "SPS", black sight blade and red fiber optic 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 SPS17SS6F intended? For SIG-Sauer 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? No general milling freedom is confirmed. Check fit and possible adjustment professionally before mounting.
What does the fiber optic sight picture mean? The fiber insert bundles ambient light for a brighter reference point. Without incident light, there is no self-illumination or tritium function.
What distinguishes this series from alternatives? SPS combines MIM/CNC manufacturing with a complete match set. TPU, TR, TRT, MPS, and PSE are mostly rear sights without a new front sight.