PSA 16" CHF M4 Carbine 5.56 NATO 1:7 13.5" Lightweight M-LOK upper - No BCG or CH - 5165448811
All Palmetto State Armory upper receivers
Click to see full view
Palmetto State Armory
Overview
The PSA 16" CHF M4 Carbine upper receiver is a complete assembly designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO with a 1:7 twist rate. This upper utilizes a carbine-length gas system, which optimizes reliability and cycling for a variety of ammunition types, making it suitable for both competitive and tactical applications. You’ll commonly find this upper in builds focused on the carbine gas system and 5.56 NATO caliber configurations.
Specifications
PSA 16" CHF M4 Carbine 5.56 NATO 1:7 13.5" Lightweight M-LOK upper - No BCG or CH - 5165448811
Available Merchants(1)
Prices checked
Price Alert
Build history on GunPartPicker
Builders have been adding the PSA 16" CHF M4 Carbine 5.56 NATO 1:7 13.5" Lightweight M-LOK upper - No BCG or CH - 5165448811 to their builds on GunPartPicker since February 2026. All time, it ranks #398 of the 1,714 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $449.99, so there haven't been real sales lately. Buying today, the lowest price is $449.99 at Palmetto State Armory, which matches the best price we saw in September.
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
The part most often added in each category by the builds that include this one
Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11
Leapers UTG PRO Ops Ready S3 Mil-Spec Stock - Black
FAXON Firearms 5.56 M16 Bolt Carrier Group Nitride Chameleon PVD
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Triggertech Adaptable AR Primary Short 2-Stage Traditional Curved Trigger w/ Bolt Release for AR Bolt Action Rifle, Black - AROTBB25NNC
Bravo Company AR-15/M16 BCM Mil-Spec 6 Position Receiver Extension
No reviews yet. Be the first to review this product!