PSA 16" M4 Carbine 5.56 NATO 1:7 Nitride 13.5" Lightweight M-LOK Upper With BCG, CH, & MBUS Sight Set
All Palmetto State Armory upper receivers
Click to see full view
Palmetto State Armory
Overview
The PSA 16" M4 Carbine upper receiver is a complete assembly designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO and a carbine-length gas system. The 1:7 twist rate enhances the stability and accuracy of a wider range of bullet weights, making it suitable for various shooting applications. This upper commonly appears in builds focused on tactical versatility and reliability, perfect for both range use and personal defense.
Specifications
PSA 16" M4 Carbine 5.56 NATO 1:7 Nitride 13.5" Lightweight M-LOK Upper With BCG, CH, & MBUS Sight Set
Available Merchants(1)
Prices checked
Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the PSA 16" M4 Carbine 5.56 NATO 1:7 Nitride 13.5" Lightweight M-LOK Upper With BCG, CH, & MBUS Sight Set to a build in May 2026.
Today the one retailer we track has it in stock. Buying today, the lowest price is $389.99 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
Popular alongside upper receivers on GunPartPicker
Aero Precision M4E1 Complete Lower Receiver W/MOE SL Grip & SL-S Carbine Stock
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Bravo Company M16 Bolt Carrier Group Black
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
No reviews yet. Be the first to review this product!