5.7x28mm
FN PDW cartridge; used in FN Five-seveN pistols and PS90.
Barrels
Rifled tubes that guide the projectile
No barrels available in 5.7x28mm yet.
Bolt Carrier Groups
The heart of the AR action
No bolt carrier groups available in 5.7x28mm yet.
Magazines
Feed devices for ammunition
Promag Ruger-57 5.7x28mm 30-Round Magazine Blue Steel
ProMag
$24.29
CMMG Gen II 5.7x28 MK4 AR-15 Conversion Magazine 32 Round Black
CMMG
$22.99
Ruger Ruger-57 Value Pack 5.7x28mm 10rd Magazine
Ruger
$50.93
Ruger 57 5.7x28mm Magazine, 10-Round, Black Oxide (90701)
Ruger
$31.03
Ruger 57 5.7x28mm 10-Round Magazine
Ruger
$50.14
MasterPiece Arms MPA5770 5.7x28mm Defender Series 20-Round Polymer Magazine
Masterpiece Arms
$30.95
Magazine, 5.7 AR Conversion, Gen II, 10rd
CMMG
$22.59
Muzzle Devices
Flash hiders, brakes, and compensators
No muzzle devices available in 5.7x28mm yet.
Ammunition
Cartridges chambered in this caliber
No ammunition available in 5.7x28mm yet.