Gorilla Machining AR-15 Flip Up Sights & A2 Sights: The Complete Guide to Reliable Backup Iron Sights

The Gorilla Machining AR-15 Flip Up Sights & A2 Sights collection is designed for shooters who value reliability, durability, and precision. While modern optics such as red dot sights, holographic sights, and low-power variable optics have become increasingly popular, backup iron sights remain an essential part of many AR-15 builds. Whether used as a primary sighting system or as a dependable backup in case of optic failure, quality iron sights continue to play an important role in rifle performance.

Gorilla Machining offers AR-15 flip-up sights and traditional A2-style sights that provide dependable aiming solutions for recreational shooting, training, hunting, competition, and general sporting use. These sights are engineered to fit standard Picatinny rail systems while delivering fast target acquisition, repeatable adjustments, and long-lasting durability.

This guide explains everything you need to know about Gorilla Machining AR-15 Flip Up Sights & A2 Sights, including how they work, the differences between sight types, their advantages, compatibility, installation, maintenance, and answers to the most frequently asked questions.

What Are AR-15 Iron Sights?

Iron sights are mechanical aiming devices that allow the shooter to align the rifle with the target using a front sight and a rear sight. Unlike electronic optics, iron sights require no batteries or electronics, making them one of the most dependable sighting systems available.

Iron sights can serve as:

• A primary aiming system

• Backup sights for optics

• Training tools for new shooters

• Emergency aiming devices

• Long-term durable sighting solutions

Because of their simplicity and reliability, many shooters choose to keep iron sights installed even when using a modern optic.

What Are Flip Up Sights?

Flip-up sights, often called BUIS (Backup Iron Sights), are folding sights that remain folded when not in use and can be deployed quickly when needed.

They are commonly mounted on the rifle's Picatinny rail and are frequently paired with red dot sights, holographic sights, or magnified optics.

Benefits include:

• Compact profile

• Fast deployment

• Lightweight construction

• Reduced obstruction of optics

• Excellent backup capability

Flip-up sights allow shooters to maintain a clean sight picture while having a dependable backup available at any time.

What Are A2 Sights?

A2 sights are based on the traditional iron sight design found on many AR-15 and M16-style rifles.

These sights are known for:

• Proven reliability

• Durable construction

• Repeatable adjustments

• Familiar sight picture

• Long service life

Many shooters appreciate A2 sights because of their simplicity and long history of dependable performance.

Benefits of Gorilla Machining AR-15 Flip Up Sights

Gorilla Machining flip-up sights provide several important advantages.

Compact Storage

When folded, the sights remain out of the way of mounted optics, reducing visual clutter while preserving rail space.

Quick Deployment

Most flip-up sights can be raised quickly when needed, allowing shooters to transition to iron sights if an optic becomes unavailable.

Lightweight Design

Modern flip-up sights are engineered to minimize weight without sacrificing durability.

A lighter rifle is often easier to carry and faster to maneuver.

Durable Construction

Quality materials and precision machining help ensure dependable performance under normal shooting conditions.

Benefits of Gorilla Machining A2 Sights

Traditional A2 sights continue to offer several advantages.

Proven Design

The A2 sight system has been used successfully for decades and remains one of the most recognized iron sight designs available.

Precision Adjustments

A2 rear sights provide repeatable adjustment mechanisms that allow shooters to fine-tune elevation and windage.

Always Ready

Unlike folding sights, fixed A2 sights are immediately available without requiring deployment.

This makes them a popular option for shooters who prefer a permanent iron sight system.

Why Backup Iron Sights Are Important

Although modern optics are highly reliable, backup sights provide additional confidence during extended use.

Common reasons shooters install backup iron sights include:

• Optic battery failure

• Accidental optic damage

• Harsh environmental conditions

• Training with iron sights

• Personal preference

Maintaining a secondary sighting system helps ensure the rifle remains usable if the primary optic becomes unavailable.

Front and Rear Sight Alignment

Accurate shooting with iron sights depends on proper alignment.

The shooter aligns:

1. Rear sight aperture

2. Front sight post

3. Target

Consistent sight alignment is one of the most important fundamentals of accurate rifle shooting.

Picatinny Rail Compatibility

Most Gorilla Machining flip-up sights mount directly to standard Picatinny rails.

This allows compatibility with many AR-15 configurations equipped with:

• Flat-top upper receivers

• Free float handguards

• Continuous top rails

• Modern AR platform rifles

Always verify compatibility before installation.

Materials and Construction

Quality iron sights are manufactured from durable materials designed to withstand regular use.

Common materials include:

Aluminum

Benefits include:

• Lightweight

• Corrosion resistant

• Strong

• Precision machined

Steel Components

Some models incorporate steel hardware in high-stress areas for additional durability.

The combination of aluminum and steel helps balance weight with long-term reliability.

Windage and Elevation Adjustments

Most AR-15 iron sights allow adjustment for:

Windage

Moves the point of impact left or right.

Elevation

Moves the point of impact up or down.

Proper zeroing ensures the rifle's point of impact corresponds with the point of aim at the chosen distance.

Installing Gorilla Machining Iron Sights

Installing AR-15 flip-up or A2 sights is generally straightforward.

Typical installation involves:

1. Verify the firearm is unloaded.

2. Position the sights on the Picatinny rail.

3. Tighten the mounting hardware according to the manufacturer's specifications.

4. Confirm proper alignment.

5. Zero the sights at the desired distance.

Always follow the manufacturer's installation instructions.

Maintaining Your Iron Sights

Routine maintenance helps preserve reliability.

Recommended maintenance includes:

• Wipe away dirt and debris.

• Inspect mounting screws.

• Verify proper tightness.

• Clean moving components on flip-up sights.

• Check adjustment mechanisms.

• Inspect for impact damage after heavy use.

Routine inspection helps maintain dependable operation.

Choosing Between Flip Up Sights and A2 Sights

Both sight systems offer unique advantages.

Flip Up Sights

Best for shooters who:

• Use optics

• Want compact storage

• Prefer lightweight accessories

• Need backup sights

A2 Sights

Best for shooters who:

• Prefer fixed sights

• Value traditional designs

• Want immediate availability

• Appreciate repeatable adjustments

The best choice depends on your intended rifle configuration and personal preferences.

Why Choose Gorilla Machining AR-15 Flip Up Sights & A2 Sights?

Gorilla Machining products are engineered to provide:

• Precision machining

• Durable materials

• Reliable compatibility

• Lightweight construction

• Repeatable adjustments

• Dependable performance

• Long service life

These qualities make them an excellent addition to a wide variety of AR-15 builds.

Frequently Asked Questions

What are AR-15 flip-up sights?

Flip-up sights are folding backup iron sights that remain folded until needed. They provide a reliable secondary aiming system for rifles equipped with optics.

What are A2 sights?

A2 sights are traditional fixed iron sights based on the classic AR-15 and M16 sight design. They offer dependable performance and repeatable windage and elevation adjustments.

Should I use backup iron sights if I already have a red dot?

Many shooters choose to keep backup iron sights installed in case the primary optic becomes damaged or unavailable. Whether to use them depends on your preferences and intended use.

Do Gorilla Machining sights fit standard AR-15 rifles?

They are designed for compatibility with standard Picatinny rail-equipped AR-15 platforms. Always verify compatibility with your specific rifle before purchasing.

Are flip-up sights durable?

Quality flip-up sights are manufactured from durable materials designed to withstand regular use while remaining lightweight and compact.

How do I zero my iron sights?

Zeroing involves adjusting windage and elevation until the point of impact matches the point of aim at your chosen distance. Follow the sight manufacturer's adjustment procedures.

Can I use flip-up sights with a scope?

Many shooters use flip-up sights with optics that provide sufficient clearance or utilize quick-detach mounts. Verify compatibility with your optic and mounting system before installation.

Are A2 sights better than flip-up sights?

Neither is universally better. A2 sights provide a fixed, always-ready sighting system, while flip-up sights offer a compact backup solution that stays folded until needed.

What materials are Gorilla Machining sights made from?

Many models use lightweight aluminum combined with steel hardware in critical areas to provide durability, corrosion resistance, and dependable performance.

Why choose Gorilla Machining AR-15 Flip Up Sights & A2 Sights?

Gorilla Machining sights combine precision manufacturing, durable construction, reliable compatibility, and user-friendly adjustments, making them an excellent choice for AR-15 owners seeking dependable primary or backup iron sights.