Product Details
Details
PSA 20″ RIFLE LENGTH 5.56 NATO 1/7 NITRIDE A2 FREEDOM RIFLE KIT
Barrel Length: 20″
Gas System: Rifle-length
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO
Twist Rate: 1 in 7″
Barrel Extension: M4
Diameter at Gas Block: .750″
Gas Block Type: F-marked FSB
Muzzle Device: A2 Style
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA Classic Tapered Handguards
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 28″
Weight as configured: 3.5 lbs
Features
Barrel: 20″ Chrome-moly vanadium steel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a rifle-length gas system. The barrel is nitride finished for accuracy and durability. Barrel is finished off with an .750″ diameter F-marked Front Sight Base, PSA Classic Handguards, and an A2 flash hider.
Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.
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.
PSA A2 Freedom A2 Rifle Lower Build Kit: Everything you need to turn your stripped lower into an A2 fixed stock lower. Kit includes A2 stock, rifle length buffer tube, buffer and spring, and PSA Freedom Lower parts kit.
What’s Included
Customers are responsible for ensuring that when assembling kits, they must adhere to all Local, State, and Federal laws.
Your new Palmetto State Armory kit will include the listed components that are required to assemble into a complete AR rifle or pistol:
Fire Control Group
- AR-15 Hammer
- Hammer Spring
- AR-15 Trigger
- Trigger Spring
- Trigger/Hammer Pins
- Disconnector
- Disconnector Spring
Buffer Tube Assembly
- Buffer Tube
- Buffer
- Buffer Spring
- Castle Nut
- Latch Plate
- Buffer Retainer Detent
- Buffer Retainer Detent Spring
Takedown & Pivot Pin Assembly
- Takedown Pin
- Pivot Pin
- Takedown Springs (3)
- Takedown Detents (3)
Bolt Catch Assembly
- Bolt Catch
- Bolt Catch Detent
- Bolt Catch Detent Spring
- Bolt Catch Roll Pin
*Not included in 9mm build kits.
Magazine Catch Assembly
- Magazine Catch
- Magazine Catch Button
- Magazine Catch Spring
Safety Selector Assembly
- Safety Selector
- Selector Detent
- Selector Spring


Shipping and Delivery
Timely Order Processing
To ensure a smooth shopping experience, we begin processing your order as soon as it’s placed. Typically, this takes 1-2 business days. Once your package is on its way, you’ll receive a tracking number, allowing you to follow its journey.
Flexible Shipping Options
For your convenience, we offer both standard and expedited shipping. If you choose standard shipping, your order will arrive in 3-4 business days. On the other hand, if you need your items sooner, expedited options are available so inform us at checkout. Regardless of your selection, we strive to deliver your purchase as quickly and efficiently as possible.
Global Delivery Services
For our international customers, we proudly ship worldwide. However, delivery times may vary depending on your location. While most international orders arrive promptly, certain destinations may require additional time due to customs processing.
Clear Costs and Support
To avoid surprises, all applicable shipping fees are calculated at checkout. Additionally, if you have questions or concerns about your order, our support team is ready to help. Whether you need assistance with tracking, delivery updates, or shipping details, we’re here to ensure your satisfaction every step of the way.