AR-15 Flip-Up Sights – Folding BUIS & Backup Iron Sights

Q: What are the best AR-15 flip-up sights?

Some of the best AR-15 flip-up sights include Magpul MBUS Pro for affordability, TROY BattleSights for durability, and Trijicon for premium performance.

Q: Should I choose polymer or steel flip-up sights for my AR-15?

Polymer flip-up sights are lightweight and affordable, while steel or aluminum flip-ups are more durable and ideal for duty or heavy use.

Q: Are offset flip-up sights worth it?

Offset flip-up sights are ideal if you run magnified optics, since they let you tilt your rifle and instantly transition to iron sights without removing your scope.

Q: Can flip-up sights replace a red dot on an AR-15?

Flip-up sights are usually used as backups, but they can serve as primary sights if you prefer irons over optics.

AR-15 Flip-Up Sights – Folding BUIS & Backup Iron Sights

AR-15 Flip Up Rear Sight

AR-15 Flip Up Front Sight

Low Profile Flip Up Sights for AR15

**Magpul MBUS Set (Front & Rear) - GEN 2 with Free MSP Silicone Gun Cloth** $88.35

**Magpul MBUS Pro - Magpul Back-Up AR-15 Sight Set - Front & Rear** $180.40

**Magpul MBUS Pro Set - Magpul Back-Up AR-15 Sight Set - Front & Rear w/ Free MSP Silicone Gun Cloth** $180.40

**Magpul MBUS Pro LR Adjustable Sight Rear** $132.95

**Magpul MBUS Pro Offset Sight Rear** $104.45

**Magpul MBUS Pro Offset Sight Front** $85.45

**Magpul MBUS Pro Sight – Rear** $109.20

**Magpul MBUS Pro Sight – Front** $90.20

**A.R.M.S. #71L Flip Up Sights (Front and Rear Set)** $144.00

**PRI Flip up Front Sight with .750" gas block** $186.00

A.R.M.S. #40L Rear Sight - Low Profile Flip UP Sight $170.00

**A.R.M.S. 40L-F Rail Mounted Flip-Up Front Sight** $170.00

A.R.M.S. #40L-P Low Profile Sight (500-600 meter) $180.00

**A.R.M.S. #40 Flip Up Rear Sight** $160.00

**A.R.M.S. #41B Silhouette Folding Front Sight** $203.00

**A.R.M.S. Silhouette #41-BL Folding Front Sight with Bayonet Lug** $203.00

**A.R.M.S. #71L series, Front Sight** $68.00

**A.R.M.S. #71L series, Rear Sight** $90.00

**Aim Sports AR-15 Front Flip-Up Sight** $23.75

**Aim Sports Rear Flip Up AR-15 Diopter Sights** $24.95

**Samson Manual AR Folding Front Sight - HK Style** $69.32

**Samson Flip Up Sights Package (Manual) HK Front w/ A2 or SP Rear** $134.19

When it comes to reliability, AR-15 flip-up sights are a must-have. These folding BUIS provide a dependable backup option if your red dot or optic fails, giving you instant access to iron sights without removing your primary setup. At Mounts Plus, we carry a full range of front, rear, and matched AR-15 flip-up sight sets from top brands like Magpul, TROY, Samson, and Trijicon.

Why Choose AR-15 Flip-Up Sights?

Backup Assurance: Always have a reliable aiming option ready.
Co-Witness Capability: Designed to work alongside red dots and LPVOs.
Versatility: Choose from front, rear, or complete flip-up sets.
Durability: Available in polymer for lightweight builds or steel for heavy-duty rifles.
Compact Profile: Fold down when not in use, deploy instantly when needed.

Types of AR-15 Flip-Up Sights

Front Flip-Up Sights

Attach to the rail or gas block, providing a precise point of aim when paired with rear BUIS. Many are height-adjustable for co-witness setups.

Rear Flip-Up Sights

Available in aperture or dioptic styles, rear BUIS deliver accuracy and quick target acquisition. Perfect for pairing with flip-up fronts.

Complete Flip-Up Sight Sets

Get both front and rear BUIS in one package, ensuring compatibility and a matched sight picture.

Offset / 45° Flip-Up BUIS

Mounted at an angle, these let you tilt your rifle and instantly transition to irons while keeping optics in place. A favorite among competition and tactical shooters.

Top Brands for AR-15 Flip-Up Sights

We carry flip-up BUIS from the most trusted names in the industry:

Magpul MBUS & MBUS Pro – Lightweight and affordable, with proven reliability.
TROY Industries – Military-grade folding sights trusted by professionals.
Samson Manufacturing – Rugged designs with precision machining.
Trijicon – Premium solutions with advanced sighting technology.

Choosing the Best Flip-Up BUIS for Your AR-15

Material: Polymer is lightweight and affordable, while steel and aluminum deliver long-lasting durability.
Optic Setup: If you run a red dot, go with co-witness flip-up sights; for magnified optics, consider offset BUIS.
Budget vs Premium: Magpul MBUS sets offer excellent value, while TROY and Trijicon provide professional-grade performance.
Use Case: Defense rifles benefit from fixed or tritium options, while competition shooters often prefer offset flip-ups.

✅ Frequently Asked Questions (FAQ)

Q: What are the best AR-15 flip-up sights?
A: Popular choices include Magpul MBUS Pro for affordability, TROY BattleSights for durability, and Trijicon for premium performance.

Q: Do flip-up BUIS co-witness with red dot optics?
A: Yes. Most AR-15 flip-up sights are designed for absolute or lower 1/3 co-witness with standard red dot mounts.

Q: Should I choose polymer or steel flip-up sights for my AR-15?
A: Polymer is lightweight and budget-friendly, while steel and aluminum options are more durable for heavy-duty or duty use.

Q: Are offset flip-up sights worth it?
A: Offset BUIS are great if you run magnified optics, since they allow fast transitions to iron sights without removing your scope.

Q: Can flip-up sights replace a red dot on an AR-15?
A: Flip-up sights are primarily backups, but they can serve as primary sights if you prefer irons over optics.

🔗 Shop AR-15 Flip-Up Sights at Mounts Plus

Upgrade your rifle with the best AR-15 flip-up sights from Mounts Plus. Whether you need a lightweight polymer set, a duty-ready steel BUIS, or offset folding sights for tactical use, we have the right option for your build. Order today and shoot with confidence.