Frequently asked Questions

1)  Will the AR57 upper receiver fit on my existing lower receiver ? A) The AR57 upper receiver will fit all Standard AR15/M16/M4 lower receivers.     It comes standard with a “carbine” buffer; for all “retractable” / “collapsible” / “carbine” stock lower receivers.      Please note:    An additional buffer is available and required     for all standard “butt stock” / “rifle … Read more

Barrels

1 Title  AR57 16″ Fluted BarrelYour Price  $175.00Description  AR57 16″ Fluted Barrel / 4140 / Std. 1/2 X 28 muzzle threads     Weight (lbs)  2.50Qty 2 Title  AR57 6″ FLUTED BARRELYour Price  $175.00Description  AR57 6″ FLUTED BARREL.  4140/std. 1/2 x 28 Muzzle Thread Weight (lbs)  2.00Qty Brian BelkoBrian Belko is a freelance writer and blogger. His primary areas of focus include the outdoors and shooting … Read more

AR57 Upper Anatomy

Brian BelkoBrian Belko is a freelance writer and blogger. His primary areas of focus include the outdoors and shooting sports. In addition to his freelance work, Brian also writes for Wide Open Spaces and is on the Pro Staff at Military Hunting and Fishing. When he isn’t busy writing, Brian enjoys fishing farm ponds for … Read more

Ballistics 5.7X28mm Cartridge

Further references: Wikipedia 5.7X28mm                                                           Article / Military Institute of Armament Technology Download here:    AR57 Ballistics Chart.pdf Brian BelkoBrian Belko is a freelance writer and blogger. His primary areas of focus include the outdoors and shooting sports. In addition to his freelance work, Brian also writes for Wide Open Spaces and is on the Pro Staff at Military Hunting … Read more

AR15SLR

1 Title  AR15SLRImage  Your Price  $99.95Description  AR15 Stripped Lower Receiver. AR57 Manufacturer, Multi Cal.  **Must Have Valid/CurrentFederal Firearms License to Purchase.****UNABLE TO SHIP TO CALIFORNIA** NEED A DEALER IN WASHINGTON?CONTACT BONA NOX FIREARMS (425) 218-0472**AWESOME DEALER!!!Weight (lbs)  2.00 admin

The AR57 PDW Upper

The AR57 PDW Upper is the most revolutionary new design on an AR15 platform. Blending the near perfect ergonomics of the ubiquitous AR15/M16 lower with a light weight, fast handling monolithic upper receiver system chambered in the 21st century’s exciting new caliber / 5.7X28mm. Complete reliability, simplicity of design, and utterly low maintenace are hallmarks … Read more

AR57 16″ COMPLETE SLC UPPER RECEIVER.

Title   AR57 16″ COMPLETE SLC UPPER RECEIVER. Image   Your Price   $745.99 Description     OUR NEW DESIGN 16″ COMPLETE SLC UPPER RECEIVER:: AR57 16″ COMPLETE SLC M-LOK UPPER. AR57 MFG., FACTORY NEW. COMES WITH 16″ LIGHTWEIGHT BARREL, LIGHTWEIGHT FLASH HIDER, SEMI AUTO BOLT, CARBINE BUFFER, AMBIDEXTROUS MAG RELEASE, AMBIDEXTROUS CHARGING HANDLE WITH M-LOK RAILS.    WE HAVE TEMPORARILY CEASED PRODUCTION … Read more