PSA 16'' 5.56mm 1:7 Premium M4A1 Profile Upper

Barrel: 16", Mil-spec Chrome Moly Vanadium Steel, M4A1 profile, 5.56 NATO chamber with a 1:7 right-hand  twist , chrome-lined, High pressure Tested and magnetic  Particle Inspected, carbine-length gas port, and M4 feedramps. These barrels are made for us by FN Manufacturing here in Columbia, SC and are finished off with a taper pinned, f-marked, front sight post, standard handguards, an A2 flash hider, and are phosphate coated to Mil-specs.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring machined T marks, and a mil-spec finish.  These uppers are made for us right here in the USA by a mil-spec manufacturer, and are marked with the Palmetto State Armory logo on the left side, up front, just below the rail.

Optional Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, chrome lined inside, and laser engraved with the Palmetto State Armory logo

Each upper is assembled to order with care, and test fired.

*Please allow up to 15 business days for your Complete Assembled Upper to ship from our facility.  Holiday and special lead times can be longer*

Bolt Carrier Groups (BCG) are an optional add on item.  If BCGs are out of stock your upper will default to no BCG added.

Shipping labels are created shortly after orders are placed.  Shipping labels update when the product leaves our facility and are en route to their destination. You will be emailed tracking information when the order leaves our facility, however if you receive one shortly after you place your order and it remains dormant, don’t be alarmed. Your tracking information will be updated when it leaves our facility and is still subject to the aforementioned lead time.  If your tracking number goes beyond the listed lead time please get in contact with us via email or phone and we will look into your issue.

Signature required on delivery.