.40 S&W

Pistol cartridge used in some AR-9 and Glock-compatible PCC builds

Bullet Diameter
0.4"
Case Length
0.85"
Typical Platforms
ar-9, glock-compatible

Requires .40 S&W-specific PCC components.

Barrels

Rifled tubes that guide the projectile

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Bolt Carrier Groups

The heart of the AR action

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Magazines

Feed devices for ammunition

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Muzzle Devices

Flash hiders, brakes, and compensators

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Ammunition

Cartridges chambered in this caliber

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