PSA AR-15 Barrel 5.56 NATO 16" M4 Carbine-Length Nitride
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Palmetto State Armory
Overview
The PSA AR-15 Barrel in 5.56 NATO features a 16-inch M4 profile, designed for optimal performance in a carbine-length gas system. The nitride finish enhances durability and resistance to corrosion, making it well-suited for extended use. This barrel is a popular choice among builders focused on carbine setups that prioritize reliability and accuracy in the 5.56 caliber.
Specifications
PSA AR-15 Barrel 5.56 NATO 16" M4 Carbine-Length Nitride
Available Merchants(1)
Prices checked
Price Alert
October 2026 on GunPartPicker
PSA AR-15 Barrel 5.56 NATO 16" M4 Carbine-Length Nitride ranked #36 of the 329 barrels builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #83 of the 1,041 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today the one retailer we track has it in stock. Prices barely moved in October 2026, holding around $99.99, with no real sale all month. Buying today, the lowest price is $99.99 at Palmetto State Armory, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Blem PSA AR-15 Complete Upper Receiver
BLEM PSA AR-15 Lower Safe/Fire
Wilson Combat AR-15 Starburst Gunfighter Pistol Grip Black
Aero Precision Gas Tube, Carbine Length - Melonite
Builds Featuring This Part
See all builds →Builds in the community that include the PSA AR-15 Barrel 5.56 NATO 16" M4 Carbine-Length Nitride
| Build | Parts | Total |
|---|---|---|
 | 8 | $897.74 |
 | 24 | $3723.25 |
 | 8 | $438.87 |
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