Description
MPN: SI-CMS-SPBUS
Features:
- 45° Offset Sight System: Enables rapid transition from your primary optic to backup sights for close-range or emergency use
- Lightweight Polymer Construction: Durable polymer design keeps weight down while maintaining reliable performance
- Low-Profile Folding Design: Backup sights fold compactly to stay streamlined and snag-free until needed
- Ideal for PDW & Rifle Builds: Compact footprint works especially well on PDWs, SBRs, and modern rifle setups
- Adjustable for Precise Zeroing:
- Front sight features elevation adjustment
- Rear sight offers windage adjustment
- Dual Aperture Rear Sight lets you switch between:
- Large aperture for rapid close-quarters shooting
- Small aperture for improved precision at distance
- Integrated CMS Cable Management: Built-in Cable Management System (CMS) helps organize weapon light and accessory cables
- Fast, Intuitive Deployment: Offset positioning keeps sights immediately accessible without removing your primary optic
- Affordable & Practical Upgrade: Combines lightweight construction, modern features, and versatility in a cost-effective package
Specifications:
- Material: Polymer
- Weight: 1.68 oz.
Compatibility:
- Any firearm with a Picatinny top rail
**Designed to work on the same plane handguard only. Will not work with a railed gas block that is higher or lower than the receiver.
Torque: Do not exceed 10 in/lbs (1.13nm) for the mount screw.
Includes:
- 1x SPBUS front sight (fully assembled)
- 1x SPBUS rear sight (fully assembled)
- 1X M3 Hex tool
- 1X Loctite® Threadlocker Blue 243®
Details:
The Strike Industries Polymer 45° Offset Backup Sights are built for rifles already running a primary optic, giving you a fast secondary sighting option without cluttering the top rail. Roll the rifle slightly and they’re immediately there.
What helps these stand out is how compact they stay when folded. The backup sight sits low and tight instead of sticking out waiting to snag on gear. On shorter rifles and PDW-style builds especially, that slimmer profile makes a difference.
Lightweight Polymer Without Feeling Cheap
A lot of polymer sights feel temporary. These don’t.
The construction keeps weight down, but they still feel solid once mounted. That lighter weight makes sense on rifles where every ounce starts adding up—especially if you’re already running lights, optics, lasers, or suppressors.
For a backup system, lighter is usually better.
Dual Aperture Setup For Different Shooting Speeds
The rear sight uses a sliding dual-aperture system, so you can switch between a larger peep for faster close-range work or a smaller aperture when you want a cleaner sight picture at distance. No tools. No disassembly. Just slide and go.
The front sight adjusts for elevation, and the rear handles windage, so getting them zeroed is straightforward.
Built-In Cable Management Is Actually Useful
One detail that could easily get overlooked is the integrated CMS (Cable Management System) functionality. If you’re running a weapon light or pressure pad, the sight gives you another routing point for cable management instead of relying entirely on zip ties or rail clips.
It keeps the setup cleaner without adding extra accessories.
A Smart Backup Setup For Modern Rifle Builds
These sights make the most sense on rifles where space and weight matter. LPVO setups, red dot + magnifier combinations, compact PDWs—anything where traditional upright backup sights start competing for rail space.
The Strike Industries Polymer 45° Offset Sights keep things compact, lightweight, and immediately accessible without overcomplicating the rifle.
