Panzer AR57 ULT Upper Assembly 5.7x28mm 16" | Palmetto State Armory
This AR57 Upper Receiver Assembly converts any AR-15 lower to a rifle capable of shooting 5.7x28 ammunition. The unique upper design loads from the top and ejects downward through the AR-15 mag well.
- Reviews: 37
5.7x28 AR57 5.7x28 AR-15 Complete Upper Receivers For Sale
Experience the ballistic performance of the iconic FN P90 in the familiar AR-15 platform with a 5.7x28 upper receiver from Classic Firearms. Whether you're looking for a rifle or pistol upper, we've got just what you need to complete your dedicated AR57 build for sale.
AR57 ULT Upper 5.7x28mm - Atlantic Firearms
This upper receiver is chambered in 5.7x28mm and features a steel 16" barrel with 1:8.5" twist and a 1/2x28 thread pattern. This AR57 Upper is constructed with a steel barrel, muzzle brake, …
5.7 AR Upper For Sale | AR-15 Parts and Accessories - Primary Arms
5.7x28 AR Uppers are chambered in the small yet potent round. Now available in the AR 5.7 rifle platform with proprietary magazines.
AR57 ULT 16in Barrel 5.7x28mm Upper Receiver Assembly - OpticsPlanet
Convert your AR-15 type rifle to shoot the same 5.7x28 ammo as the legendary FN P-90 PDW! This AR57 Upper is constructed with a steel barrel, muzzle brake, bolt carrier group, buffer, and screws, all built into an alloy monobloc receiver.
UPPER GROUP, BANSHEE, 5.7X28MM, 8" | CMMG - AR 15 and AR …
Designed to provide superior ballistics and less felt recoil than most pistol caliber personal defense weapons, 5.7x28mm has quickly become one of the most popular chamberings in the PDW space. With the 8” BANSHEE™ upper group you can build the PDW AR15 of your dreams.
- Reviews: 15
UPPER GROUP, RESOLUTE, 5.7X28MM, 16.1" | CMMG - AR 15 and AR …
Combine this RESOLUTE® Upper Group with either our Mk57 Lower or a standard AR15 lower group and CMMG®’s 5.7 AR Conversion Magazines and you’ll be ready to hit the range! Available in seven different Cerakote finishes, all CMMG® Upper Groups come complete with bolt carrier group and ZEROED™ accessories including:
- Reviews: 7
AR57 Ultralight Tactical AR-15 Complete Upper Receiver …
The AR57 Upper Receiver Assembly converts an AR-15 to shoot 5.7x28 FN ammunition. The unique upper design loads on top and accepts FN PS90 magazine (not included) and ejects downward through the AR-15 magwell. This upper is precision machined from a one piece aluminum forging.
AR57 Ultra Light Tactical 5.7x28mm Complete Upper - 16"
Panzer Arms AR57 Ultra Light Tactical 5.7x28mm Upper is a complete upper receiver that converts any mil-spec AR-15 lower to shoot 5.7x28mm ammunition. This alloy monobloc receiver is built with a 16-inch steel barrel, perforated muzzle brake, bolt carrier group, buffer, and screws.
AR57 16" Complete ULT Upper 5.7x28 w/ 1-50 Round Mag, Drop …
Comes with a 16" lightweight barrel with M-LOK rails. This AR57 Upper Receiver Assembly converts any AR-15 lower to a rifle capable of shooting 5.7x28 ammunition. The unique upper design loads from the top and ejects downward through the AR-15 mag well.