5.7 x 28 mm
- Other Ammunition Add to cart
A-ZOOM 5.7x28mm Metal Snap Caps enable safe dry firing practice and function testing without live ammunition. Ideal for magazine changes, drills, and teaching proper firearm handling.
$17.00In Stock - AR Bolt Carrier Groups Add to cart
CMMG’s patented Radial Delayed Blowback system reduces felt recoil while maintaining full compatibility with standard AR-15 uppers and lowers. This 5-inch 5.7x28mm barrel and BCG kit delivers less recoil than conventional blowback designs.
$425.00Low Stock - AR Bolt Carrier Groups Add to cart
CMMG 5.7x28mm 8-inch barrel and bolt kit delivers compact firepower for AR-15 platforms with 4140 chrome moly steel construction and salt bath nitride finish. Includes radial delayed blowback bolt and 1/2″x28″ threading for quick integration.
$433.00Low Stock - AR Pistols Add to cart
CMMG Banshee MK57 5.7x28mm semi-auto pistol features a Radial Delayed Blowback operating system engineered for reliability and control. Full M-LOK accessory mounting, FN Five-seveN pattern magazine compatibility, and complete ZEROED parts kit included.
$1,527.00Low Stock - AR Magazines Add to cart
CMMG 10-round magazine extension adds reliable capacity to your FN Five-seveN with durable polymer construction and corrosion-resistant spring—simple installation without permanent modification.
$16.00In Stock - AR Magazines Add to cart
CMMG’s redesigned 5.7x28mm AR15 magazine features upgraded feed lips and stylized grip texture for reliable performance with CMMG 5.7×28 Radial Delayed Blowback uppers and Mk4/Mil-Spec lowers. 10-round capacity.
$29.00In Stock - AR Barrels Add to cart
CMMG’s patented Radial Delayed Blowback system reduces recoil and BCG weight while maintaining last round bolt hold open in this 16.1″ 5.7x28mm barrel and BCG kit. Compatible with Mk4/mil-spec AR15 uppers and either CMMG Mk57 or standard mil-
$490.00Low Stock - Handgun Magazines Add to cart
CMMG 5.7x28mm magazine delivers 32-round capacity in durable polymer, designed specifically for CMMG AR conversion uppers on standard AR lowers.
$30.00In Stock - Semi Auto Handguns Add to cart
Dark Mountain Arms Stowaway 5.7×28 features a removable, collapsible barrel for compact storage and suppressor-ready performance, plus optics-ready Picatinny rail. Made in USA by veteran-owned Dark Mountain Arms.
$388.00In Stock - Semi Auto Handguns Add to cart
Diamondback Firearms DBX 5.7x28mm delivers extended engagement with its 30-round capacity and 8-inch barrel in a lightweight, corrosion-resistant nickel finish. Controllable 5.7x28mm ballistics ideal for training, competition, and tactical applications.
$1,185.00Low Stock - Semi Auto Handguns Add to cart
Diamondback Firearms DBX57 delivers cutting-edge 5.7x28mm performance in a compact, ergonomic platform with monolithic upper receiver and dual gas piston system. Includes Magpul accessories, side folding brace, and 20-round FN Five-Seven compatible magazine.
$1,109.00In Stock 
Diamondback Firearms DBX57 5.7x28mm 8 Inch 20 Round Stainless Pistol
Diamondback FirearmsAdd to cartSemi Auto Handguns Add to cartDiamondback Firearms DBX57 delivers compact 5.7x28mm capability in stainless steel with an 8-inch barrel and 20-round capacity. This dual gas piston pistol accepts FN Five SeveN Magazine format for reliable recreational and defensive use.
$964.00Low Stock- Handgun Ammunition Add to cart
Fiocchi Hyperformance brings advanced frangible ammunition technology to the 5.7x28mm, with a 35-grain copper-core projectile designed for rapid expansion and lead-free performance across all 5.7x28mm firearms.
$49.20In Stock - Handgun Ammunition Add to cart
Fiocchi 57PT40 Hyperformance 5.7x28mm 40gr Tipped Hollow Point 50 Per Box/10 Case
$30.00In Stock - Handgun Ammunition Add to cart
Fiocchi Range Dynamics 5.7x28mm 40 grain Full Metal Jacket delivers economical, high-volume shooting without sacrificing quality. Trusted Fiocchi engineering ensures consistent, reliable performance for demanding shooters.
$84.00In Stock - Handgun Ammunition Add to cart
Fiocchi Range Dynamics 5.7x28mm delivers subsonic velocity with reduced recoil and sound signature, ideal for suppressed and unsuppressed shooting. The 62-grain Full Metal Jacket design performs reliably for plinking and general range use.
Original price was: $29.00.$27.00Current price is: $27.00. SALEIn Stock FN 3848950501 PS90 5.7x28mm 50+1 16.04″ Black Steel Barrel, Flat Dark Earth Picatinny Rail Aluminum Alloy Receiver, Bullpup w/Thumbhole Flat Dark Earth Synthetic Stock, Ambidextrous
FN America / FN HerstalAdd to cartSemi Auto Rifles Add to cartFN 3848950501 PS90 5.7x28mm 50+1 16.04″ Black Steel Barrel, Flat Dark Earth Picatinny Rail Aluminum Alloy Receiver, Bullpup w/Thumbhole Flat Dark Earth Synthetic Stock, Ambidextrous
$1,712.00Low Stock- Rifle Ammunition Add to cart
FN America’s High Performance 5.7x28mm delivers a 27-grain jacketed hollow point at 2216 fps muzzle velocity with lead-free construction ideal for indoor ranges. NATO-standardized ammunition featuring FN Herstal’s proven engineering in reloadable boxer-primed brass cases.
$54.00In Stock FN America 5.7x28mm 27 Grain Lead Free Hollow Point Self Defense Ammunition
FN America / FN HerstalAdd to cartHandgun Ammunition Add to cartFN America’s lead-free hollow point design delivers rapid expansion and controlled penetration optimized for 5.7x28mm performance. Fifty rounds of precision-engineered self-defense ammunition in lightweight brass cases.
Original price was: $53.00.$50.00Current price is: $50.00. SALEIn StockFN America 5.7x28mm 30 Grain Hollow Point Personal Defense Ammunition
FN America / FN HerstalAdd to cartHandgun Ammunition Add to cartFN America 5.7x28mm personal defense ammunition features 30-grain jacketed hollow points engineered for stopping power in defensive situations. Each box contains 50 reloadable cartridges.
Original price was: $43.00.$39.00Current price is: $39.00. SALEIn Stock
