PSA 16" M4 Carbine Length 5.56 NATO 1/8 Phosphate MOE Upper With BCG, CH, & MBUS Rear, Flat Dark Earth
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Palmetto State Armory
Overview
The PSA 16" M4 Carbine Length Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO with a 1:8 twist rate that allows for versatility in stabilizing a range of bullet weights. The carbine gas system ensures reliable cycling, making it suitable for both tactical and recreational shooting. Commonly found in mid-range builds, this upper receiver in Flat Dark Earth not only performs well but also adds a distinctive aesthetic to your firearm.
Specifications
PSA 16" M4 Carbine Length 5.56 NATO 1/8 Phosphate MOE Upper With BCG, CH, & MBUS Rear, Flat Dark Earth
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Build history on GunPartPicker
Builders on GunPartPicker first added the PSA 16" M4 Carbine Length 5.56 NATO 1/8 Phosphate MOE Upper With BCG, CH, & MBUS Rear, Flat Dark Earth to a build in February 2026.
Updated · from real builds on GunPartPicker
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