0940 and 1045 Receivers, What's the Difference?

Choosing the right lower receiver for your firearm build can be crucial, and understanding the differences between the available options is essential. Angstadt Arms offers two distinct lower receivers: the 0940 and the 1045. While both are engineered to incorporate many mil-spec components, there are key distinctions that make each one unique.

Shared Features

Before exploring the differences, it’s important to note the commonalities between the 0940 and 1045 receivers:

• Mil-Spec Components: Both receivers are designed to use a variety of mil-spec components, including safeties, fire control groups, takedown pins, and grips. This makes them highly versatile and compatible with a wide range of aftermarket parts.
• Minimal Proprietary Parts: Angstadt Arms ensures that both receivers are designed to use as few proprietary parts as possible. This approach enhances the flexibility and ease of customization for firearm enthusiasts.

0940 Receiver

The 0940 receiver is specifically designed to accept factory Glock magazines in the following calibers:

• 9mm
• .40 S&W
• .357 Sig

1045 Receiver

The 1045 receiver is a large frame receiver designed to accept factory Glock magazines in the following calibers:

• .45 ACP
• 10mm