PSA AR-15 Rifle Kit 5.56 16″ 1:7 Mid-Lgth Nitride 13.5″ LTWT M-Lok MOE w/ MBUS Sights
Product Details
Details
Barrel Length: 16″
Gas System: Midlength
Barrel Profile: A2
Barrel Steel: 4150 Chrome-Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-profile
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 13.5″ Lightweight M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Optics: Magpul MBUS Front and Rear Flip-Up Sights, Black
Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG
Overall Length: 24.5″
Features
Prepare for exceptional performance with our meticulously crafted AR-15 rifle build. The 16″ 4150V Chrome Moly Vanadium steel Freedom barrel, chambered in 5.56 NATO, showcases a 1:7 twist rate, M4 barrel extension, and a reliable Mid-length gas system. Equipped with a .750″ diameter low-profile gas block, a PSA 13.5″ Lightweight M-Lok Free Float Rail, and an A2 flash hider, this barrel offers optimal stability and enhanced control. The upper receiver, forged from 7075-T6 A3 aluminum and coated with a durable black hard coat anodized finish, features M4 feed ramp cuts, ensuring seamless ammunition feeding. Rest assured that these upper receivers are proudly made in the USA. The Bolt Carrier Group, designed for both AR15 and M16 rifles and carbines, incorporates a shot-peened, Mil-spec Carpenter 158® steel bolt for exceptional durability. The gas key is securely fastened with grade 8 fasteners and staked for added reliability. To complete the build, we provide the PSA MOE EPT Lower Build Kit in black, along with the highly regarded Magpul MBUS Sight Set in black. Elevate your shooting experience with this comprehensive package, crafted to meet and exceed the highest standards of performance and durability.
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.