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Questions & Answers
Are these ambidextrous? Expert Answer

Yes, these can be used on either side.

by Ethan C., Gear Expert, October 21, 2019
Customer Reviews
Helpful Positive Review
They look great by OPLover, Verified Owner, December 12, 2020
Will be updating review once I test them out at the range, but the look great on my ar-15 w/ Trijicon ACOG. Kinda wish I would've spent the extra few bucks for the red ones, oh well.......................
1/5 found this helpful
Helpful Positive Review
The Strike Industries Sidewinder BUIS ll are amazing in all aspects of functionality and design. There sleek design tuck in out of the way when not in use and are very easy to access when use is needed... They can be used as a 45° sight paired with a...
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1/1 found this helpful
Helpful Negative Review
I wish they worked... by Kief, Verified Owner, April 8, 2020
I, just like a bunch of people bought these thinking "I'll be able to make them work." Not the case at all. Unfortunately they are made incredibly well, except for the depth of the "holding tooth" on the screw down side. The only way they will work i...
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3/4 found this helpful
Most Recent Reviews
Only more range time will tell by Brian, Verified Owner, August 10, 2025
I mounted these to a pistol AR. Harder to zero with a short barrel and a 1-6x24 center optic. Quality of these sights appear strong. Only time will tell if they hold up to the abuse. Would have liked to feel positive lock ins like a detent style syst...
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Most Recent Reviews
45° sights by KC, December 10, 2023
Haven't sighted them in yet. But they look an sit nicely. Easy flip up but think they should lock in the up position more firmly. Looking forward to seeing how well the hold up.
0/1 found this helpful
Most Recent Reviews
45° flip sights by Coupe, Verified Owner, December 10, 2023
Looks and sits good. Haven't been to the range with them yet. But looking forward to seeing how they hold up
0/1 found this helpful
Read All 14 Reviews
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Product Info for Strike Industries BUIS II Sidewinder

The Strike Industries Sidewinder BUIS II is an upgraded version of their Sidewinder back-up iron sights that provides tool-less sight adjustments for precise shots at a variety of ranges. Now, these AR 15 Parts developed by Strike Industries can easily handle 5.56 and larger calibers as well as harsher environments than their predecessor. For maximum durability that won't weigh you down, these Strike Industries Sidewinder Back-Up Iron Sights II are crafted with steel and aluminum, and the low-profile mounting system ensures perfect alignment with even the largest of optics meaning that you can use the back-up sights without ever removing the optic. Whether you're looking for 45-degree offset or traditional in-line capabilities, the Strike Industries Sidewinder 2 is the perfect option for shooters who want to always be prepared in the field.image

WARNING: California`s Proposition 65

Specifications for Strike Industries BUIS II Sidewinder:

Manufacturer: Strike Industries
Condition: New
Sight Mounting Orientation: Offset
Sight Position: Front and Rear
Deployable: Yes
Fabric/Material: Steel/Aircraft Aluminum
Hand: Right
Mount Type: Picatinny

Features of Strike Industries Sidewinder BUIS II

  • SIAmbush low profile mounting system.
  • 45 degree offset and traditional inline capabilities in one unit.
  • Toolless dial adjustments for windage and elevation.
  • Steel and Aircraft Aluminum construction.

Package Contents:

  • Strike Industries Sidewinder BUIS II
  • 1x Front Sidewinder Iron Sight
  • 1x Rear Sidewinder Iron Sight
  • 1x 2pcs screws
  • 1x allen key

Strike Industries BUIS II Sidewinder Orderable Models

List of Orderable Models

  • Strike Industries Sidewinder BUIS II Offset Deployable Front and Rear Sight, Black, One Size, SI-SIDEWINDERII-BK , MPN: SI-SIDEWINDERII-BK , UPC: 708747548334 , Code: 3Q-IRN-STRIN7-SI-SIDEWINDERII-BK
  • Strike Industries Sidewinder BUIS II Offset Deployable Front and Rear Sight, Red, One Size, SI-SIDEWINDERII-RED , MPN: SI-SIDEWINDERII-RED , UPC: 708747548594 , Code: 3Q-IRN-STRIN7-SI-SIDEWINDERII-RED
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