FN America M4 Military Collector Stripped AR-15 Lower Receiver
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FN America
Overview
The FN America M4 Military Collector Stripped AR-15 Lower Receiver is a forged lower designed for the AR-15 platform, made from durable 7075-T6 aluminum with a hardcoat anodized finish for increased resistance to wear. This lower receiver features non-ambidextrous controls and is compatible with multi-caliber builds, making it a versatile choice for various configurations. Builders often use this lower in multi-caliber setups, allowing for a wide range of customization options.
Specifications
Available Merchants(5)
Prices checked
Price Alert
September 2026 on GunPartPicker
FN America M4 Military Collector Stripped AR-15 Lower Receiver ranked #166 of the 477 lower receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #184 of the 1,124 lower receivers builders have added. Builds with this lower receiver are mostly chambered in 5.56 NATO (88%, then .223 Wylde 13%), split between carbine-length (40%) and mid-length (40%) gas systems, and nearly all AR-15.
It was hard to find in September 2026, in stock on only 1 of the 27 days we checked, and today only MidwayUSA has it in stock. It dipped to $129.99 at KY Gun Company for a stretch in September 2026, under its usual $144, so sales do come around. Buying today, the lowest price is $154 at MidwayUSA, above September's low of $129.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
CMMG AR-15 A2 Pistol Grip
MK16 Urg-I Complete Upper Receivers 5.56mm - MK16 14.5" URGI Upper CHF Barrel, Ach, Rebcg 5.56mm Ddc
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey
CMMG AR15 Ambi Mag Catch, Black - 55AFF6E
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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