Centurion Arms CM4 5.56 Forged AR-15 Receiver Set
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Centurion Arms
Overview
The Centurion Arms CM4 5.56 Forged AR-15 Receiver Set is a robust assembly designed for the AR-15 platform, crafted from durable 7075-T6 aluminum. This set includes both the lower and upper receivers, making it ideal for builders looking to create a reliable and precise firearm chambered in 5.56 NATO. Commonly found in mid-range to high-performance builds, this receiver set offers a solid foundation for various configurations.
Specifications
Build history on GunPartPicker
Builders have been adding the Centurion Arms CM4 5.56 Forged AR-15 Receiver Set to their builds on GunPartPicker since September 2026. All time, it ranks #99 of the 964 lower receivers builders have added. Builds with this lower receiver are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today both retailers we track have it in stock. Prices barely moved in August 2026, holding around $225.63, so there haven't been real sales lately. Buying today, the lowest price is $225.63 at AR15 Discounts, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Frequently Built With
The part most often added in each category by the 18 builds that include this one
Magpul AR-15 Flip-Up MBUS PRO Magpul Back-Up Rear Sight Black
Magpul .432" Flip-Up MBUS PRO Back-Up Front Sight Steel Black
Sons of Liberty Gun Works AR-15 Gas Tube Stainless Steel Mid-Length
Bravo Company M16 Bolt Carrier Group Black
BCM GFHMK2MED Ambidextrous MK2 Charging Handle Compatible w/ Mil-Spec AR-15 Black 7075 T-6 Aluminum
Sons of Liberty Gun Works Gas Block V2 - .750"
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