AR57 AR-15 Generation 2 A3 Upper Receiver Assembly 5.7x28mm FN
- Upper Receiver: A3 Flat-Top
- Barrel Length: 16"
- Barrel Contour: Fluted, heavy
- Barrel Material: 4140 Chrome Moly Steel
- Muzzle Thread Pattern: 1/2"-28
- Chrome Lined: No
- Barrel Finish: Parkerized
- Twist Rate: 1 in 8.5"
- Chamber: 5.7 x 28mm FN
- M4 Feed Ramps: N/A
- Muzzle Device: A2 Flash Hider
- Gas System Length: Carbine
- Gas Block Diameter: 0.750"
- Handguard: Free-Float Quad Rail
- Sights: None
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: N/A
- Extras: Single Rail Gas Block
Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.
Shipping Weight: 4.800 PoundsXThe total weight of the product, including the product’s packaging as it sits on our shelf. Since some products ship directly from the Manufacturer, their weight may be unavailable. Because of variations in the manufacturing process, similar products may have differing weights. Unless the product is designated as “Ships Alone”, Shipping Weight does not include the shipping box or packing materials associated with your order.
XProduct ships from MidwayUSA, separate from any other products on your order due to its size. Products that are Shipped Alone incur separate "Per Order" and "Per Pound" shipping charges.
XProduct is regulated by the US Department of Transportation (DOT) and cannot be shipped via USPS or air shipping methods. DOT-Regulated products must ship UPS Ground.
XProduct is restricted by shipping carriers and cannot be shipped to certain locations or via certain shipping methods.
XAdditional shipping charge for HazMat products. Carriers charge extra to ship packages with products they consider hazardous, such as reloading powder and primers.
The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.
- DPMS Lower Receiver Parts Kit AR-15... $59.99 Available
- FN SS197SR Ammunition 5.7x28mm FN 40 Grain Hornady V-Max... $29.99 View More Options
- AR57 Magazine FN P90, PS90, AR57 5.7x28mm FN Polymer Smoke... $26.51 - $46.99 View More Options
- FNH Magazine Pouch FN PS90/P90 Nylon Black... $204.00 Special Order