Name: Strike Industries Polymer Backup Sights
Brand: Strike Industries
SKU: 3Q-IRN-RSSSP
Price: 66.45 USD
Availability: InStock
Rating: 4.7 (18 reviews)

Strike Industries Polymer Backup Sights, Black, SI-SPBUS

Strike Industries Polymer Backup Sights, Black, One Size, SI-SPBUS

Strike Industries Polymer Backup Sights, Black, SI-SPBUS

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Strike Industries Polymer Backup Sights 00:56

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Customer Reviews

Helpful Positive Review

SIBUS Polymer by MrDrProfRay, Verified Owner, June 13, 2025

For the price as a whole set, it’s really not that bad. I got a pretty sturdy set, to test if it’ll get knocked back I put it on my 338LM PR and it handled the recoil. So I put it on my new ARP in 5.56 and it handles great. My only question is if it’...
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1/1 found this helpful

Helpful Positive Review

Great for LPVO by BattleBuilt, April 15, 2024

Strike Industries gets a lot of hate but this is one product they offer that I can vouch for. First of all they are quality and solid as can be. They are also extremely low profile and fit under my LPVO. But the winner for me was when these sights ar...
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6/6 found this helpful

Helpful Positive Review

Nice Practical Sights by Alexander Milner, Verified Owner, September 29, 2024

Popped these babies on and hit a hopping target (soda can) 5 times in a row at 40-ish meters. Required minimal windage to be spot on. I like their look. Good for the price. Added to my growing collection of Strike Industries accessories

2/2 found this helpful

Helpful Positive Review

Nice, Affordable, Strong by Johnson, Verified Owner, January 14, 2025

These seem to be as good as any others. They are not spring loaded like the MBUS, but that’s not a deal breaker for me. They are strong, tool less zero, and very low profile. I’d buy them again.

1/1 found this helpful

Helpful Positive Review

folding polymer sights by Bowanibill, February 8, 2024

These are really nice sights and when folded down you still have a open sight in an emergency overall there pretty good for the price

2/3 found this helpful

Helpful Positive Review

Strike Industries sights by max, Verified Owner, July 7, 2024

Great backup sights, works perfect for 1/3 cowitnes, strong clicks when positioning up and down, happy with this purchase.

1/1 found this helpful

Read All 18 Reviews

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Color:: Black
Condition:: New

Code: 3Q-IRN-RSSSP-SI-SPBUS

MPN: SI-SPBUS

UPC: 793811765694

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Product Info for Strike Industries Polymer Backup Sights

The Strike Polymer Backup Sights (SPBUS) is a low-profile affordable sighting system that is designed for the AR platform and has bonus built-in sights when flipped down. No time to flip up the sights, you have backup sights on your backup sights. The SPBUS sights are made with lightweight and durable SI Polymer Extreme material with steel mounting tab and insert that can handle any wear and tear you throw at it without any major issues. As long as youve got a Picatinny rail, you will have these SPBUS mounted in minutes. Both sights are capable of flipping down nice and low so you dont have to worry about them being in your way when theyre not in use or snag on any gear. The SPBUS does not have an internal spring so you dont accidently deploy the sights when you dont need them. Since the SPBUS sights are slightly taller than standard A2 sights (2.3mm/0.09" taller), the SPBUS is designed and optimized to have both sights paired together and not with other sights. To zero the sights or make any adjustments, the rear sight has an easy-to-use knob for adjusting windage while the front sight elevation is easily and quickly adjusted without tools. The rear SPBUS has dual apertures at 4.70mm(0.19") for longer eye relief, low light and faster target acquisition; and 1.75mm(0.07") for shorter eye relief and greater accuracy. Quickly slide the rear sight up and down to change to the aperture you need. If you need these as a primary or want them as a backup sight, the Strike Polymer Backup Sights (SPBUS) is a low-profile durable multi-function option that has tool-less adjustments paired at an affordable price.

WARNING: California`s Proposition 65

Specifications for Strike Industries Polymer Backup Sights:

Manufacturer:	Strike Industries
Color:	Black
Condition:	New
Fabric/Material:	SI Polymer Extreme
Mount Type:	Picatinny

Features of Strike Industries Polymer Backup Sights

Builtin backup sights when flipped down for quick target acquisition
Lowprofile and low snag design
Toolless adjustments of windage and elevation
Quick sliding dual aperture rear sight (large: 4.70mm(0.19")/small: 1.75mm(0.07"))
Steel mounting tab and insert for added strength
Manual deployment so you dont accidently deploy when you dont need
Front sight can be painted to users color preference
Budget friendly cost effective option
Lightweight and durable custom blended SI Polymer Extreme material

Package Contents:

Strike Industries Polymer Backup Sights
x1 SPBUS front sight (fully assembled)
x1 SPBUS rear sight (full assembled)
x1 Hex tool 2.0mm
x1 Loctite Threadlocker Blue 243

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Strike Industries Polymer Backup Sights Orderable Models

List of Orderable Models

Strike Industries Polymer Backup Sights, Black, One Size, SI-SPBUS , MPN: SI-SPBUS , UPC: 793811765694 , Code: 3Q-IRN-RSSSP-SI-SPBUS

Strike Industries Polymer Backup Sights Unavailable & Discontinued Models

List of Unorderable Models

USED, Strike Industries Polymer Backup Sights, Black, One Size, SI-SPBUS , MPN: SI-SPBUS-EDEMO , Code: 3Q-IRN-RSSSP-SI-SPBUS-EDEMO-IN-D

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Strike Industries Polymer Backup Sights Color: Black, Condition: New, 11% Off Plus Blazin' Deal w/ Free S&H

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Product Info for Strike Industries Polymer Backup Sights

Specifications for Strike Industries Polymer Backup Sights:

Features of Strike Industries Polymer Backup Sights

Package Contents:

Strike Industries Polymer Backup Sights Orderable Models

List of Orderable Models

Strike Industries Polymer Backup Sights Unavailable & Discontinued Models

List of Unorderable Models