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HOUSON Offset Flip Up Sights: Faster transitions for Picatinny-equipped rifles

HOUSON 45 Degree Offset Flip Up Sights, Tactical AR15 Backup Iron Sight 45 Degree Rapid Transition BUIS Backup Iron Sight Backup Sight Set for 21mm Picatinny R123
4.6
[45-degree Flip-Up]  Low-profile 45-degree offset sight for quick target acquisition alongside optics.
[Durable Aluminum Construction]  Rust-proof hard aluminum alloy resists wear and corrosion for long-lasting use.
[Easy Allen Key Installation]  Includes Allen key screws for fast, tool-simple installation and removal.
[Picatinny & Weaver Compatible]  Mounts to Picatinny or Weaver rails for scopes, optics, and accessories.
[Wide Rifle Compatibility]  Fits 21mm adapter mounts and most rifles, perfect for airsoft and tactical builds.
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Backup iron sights for rifles, designed to enable rapid transitions between optics and iron sights while remaining low profile. The HOUSON Offset Flip Up Sights give confidence in close-range follow-up shots by staying clear until needed. Are these sights the practical upgrade for most Picatinny or Weaver rail users?

⚡ At a Glance
  • Durability: Rust-proof hard aluminium alloy construction, wear-resistant
  • Best for: Shooters needing a low-profile, quick-transition backup for Picatinny or Weaver rails
  • Not ideal for: Users who require tool-free mounting or integrated optics

45 degree offset flip-up backup iron sights made from rust-proof hard aluminium alloy. Compatible with Picatinny and Weaver standard fittings and suitable for rifles using a 21mm adapter mount.


Rapid target transitions, with 45 degree offset flip-up design

The 45 degree offset keeps the sight folded to the side of the optic, allowing a clear sightline until manual deployment. A flip-up mechanism brings the sight into alignment quickly for immediate target acquisition.

Quicker switch between optic and irons during close engagements, useful for CQB or dynamic range work. Keeps the primary optic unobstructed until a fast fallback is required.

Robust field-ready construction, with rust-proof hard aluminium alloy

Hard aluminium alloy offers resistance to corrosion and abrasion while keeping weight low. Wear-resistant finishes help maintain function under repeated use.

Long-lasting performance for regular outdoor use, including wet or dusty conditions. Minimal maintenance required to preserve reliability.

Broad rail compatibility, with support for Picatinny and Weaver standards

Mounting interface accepts Picatinny or Weaver attachments and is suitable for rifles using a 21mm adapter mount. Fastening uses Allen key screws for a secure connection to the rail.

Fits most rifles equipped with common 21mm adapter rails, making it simple to add as a backup sight. Screws can be tightened or removed with an Allen key, allowing straightforward installation or removal.

✨ The 4 Key Reasons for HOUSON Offset Flip Up Sights
  1. 45-degree offset - Faster sight acquisition when switching from optic to irons
  2. Flip-up low profile - Stows clear of optics when folded, keeps sightline unobstructed
  3. Hard aluminium alloy - Resists corrosion and wear for long service life
  4. Allen key installation - Secure mounting that can be tightened or removed with tool
📋 Technical Details at a Glance
  • Category: Backup iron sight set
  • Brand: HOUSON
  • Product type: 45 degree offset flip up sights
  • Mount compatibility: Picatinny and Weaver standard
  • Rail width compatibility: Suitable for 21mm adapter mounts
❓ Frequently Asked Questions

Q: Are these sights compatible with Picatinny rails?

A: Yes, compatibility includes Picatinny and Weaver standard fittings and they are suitable for rifles using a 21mm adapter mount.

Q: What material are the sights made from?

A: Construction uses a rust-proof hard aluminium alloy with a wear-resistant finish for long-term durability.

Q: How are the sights installed and removed?

A: Installation and removal use Allen key screws, which makes mounting secure and straightforward with the appropriate tool.

🏆 Our Verdict

Ideal for shooters who want a reliable, low-profile backup sight for quick transitions between optic and iron sights. Durable aluminium construction combined with 45 degree offset geometry and broad rail compatibility makes it a practical choice for many rifles. Durable build and straightforward installation suggest long-term value for regular use.