Lock Pins

Lock Pins for Stable Receiver Connection

The AEG lock pin, also known as a body pin or receiver pin, ensures a secure connection between the upper and lower receivers of your replica. This small part prevents play and contributes to the structural stability of your platform.

Within this category, you will find lock pins from Krytac and Guarder, supplemented with models from G&G. These parts fall under AEG External Parts and are suitable for replacement or structural upgrade.

What exactly does a lock pin do?

• Connects the upper and lower receivers
• Minimises play between body parts
• Ensures stable internal alignment
• Supports solid platform construction

A worn or loose lock pin can lead to movement between receiver parts, which can indirectly affect hop-up alignment and front-end stability.

For optimal fit, the lock pin must be compatible with your brand of replica and receiver type.

Compatibility and Platform

Important points to consider:

• Suitable for M4 / AR platforms
• Platform-specific dimensions
• Correct diameter and length
• Check spring or pressure mechanism

Not every body pin fits universally on every AEG platform.

Material & Construction

Lock pins are typically made of hardened steel or reinforced metal for maximum durability.

Common features:

• Wear-resistant coating
• Precision-milled fit
• Spring-loaded lock
• Realistic finish

A correctly mounted lock pin contributes to a sturdy and professionally finished replica.

What can you find in this category?

• M4 body pins
• Receiver lock pins
• External replacement parts
• Structural upgrade components

Lock pins are suitable for players who want to repair or stabilise their replica.

Frequently asked questions

Does a lock pin affect performance?
Indirectly, because it prevents play between receiver parts.

Is a lock pin universal?
No, check platform and size compatibility.

Can I replace my lock pin myself?
In most cases, this is easy to do.

Why is there play in my body?
This may indicate wear or an incorrectly fitted lock pin.

With a high-quality lock pin, you can ensure a stable, solid and professionally finished AEG construction.