Tag Archives: Diamondback DBX

5.7 NATO for Self Defense?

Designed by FN as a caliber replacement for 9mm pistols and submachine guns in the 1980s, the 5.7x28mm was only recently adopted as a NATO standard. But is it any good?

While I’ll save the history of the cartridge for another day, the 5.7 was first marketed by FN in the early 1990s in its P90/S PDW/carbine and Five-seveN pistol. Since then, those guns have been adopted with military and police forces in more than 40 countries and sold widely on the commercial market. This undoubtedly led to its recent NATO standardization— along with its competitor, the Heckler & Koch -developed 4.6x30mm.

However, as the only gun available for the 4.6 NATO is the HK MP7, which is unobtainable on the U.S. consumer market, the 5.7 NATO is the default PDW player today.

The thing is, ammo selection can be everything.

More in my column at Guns.com. 

Meet 5.7 NATO

Designed in the late 1980s for use in Personal Defense Weapons, or PDWs, the 5.7×28 round was first marketed by FN in the early 1990s in its P90 PDW/P90S carbine and Five-seveN pistol. Since then, those guns have been adopted with military and police forces in more than 40 countries as well as sold extensively on the commercial market.

Now, some three decades after it was introduced, the Western defense alliance recognized the caliber under standardization agreement (STANAG) 4509, which integrates it into the AEP-97– NATO’s Multi-Caliber Manual Of Proof and Inspection.

More in my column at Guns.com.

An Interesting 31-shot 4-Pound PDW

For the past few months, I have been kicking around a Diamondback DBX 57 pistol. Unlike most firearms chambered in 5.7x28mm, which are simple blowback weapons, the DBX is a large format pistol that uses a dual gas piston action that can be dialed up or down with the aid of a screwdriver in the field without stripping the gun down.

It accepts standard AR-15 triggers and grips while having the same style safety lever format. Unlike the AR, there is no buffer tube, and the locked-breech rotating bolt’s action is side-charging, oriented out of the box with a left-hand knob– but don’t worry, it can be swapped to the right if that’s how you swing. The barrel is threaded with a 1/2x28TPI pitch, opening it up to a wide array of muzzle devices and cans.

As far as mags go, it takes standard FN FiveseveN style double stacks, which are made in both factory and aftermarket variants in 10, 20, and 30-round formats.

And, I found out, that it shoots pretty well.

The total weight of the DBX with the Romeo5, TF1913 side-folding brace, and 21 rounds of V-Max came to 4.4-pounds, which is still balanced enough to fire one-handed with ease. You can move to 30-rounder FN mags and only add a couple extra ounces.

More in my column at Guns.com.

I’ve seen it: Possibly the neatest 3-pound pistol on the market

Florida-based Diamondback Firearms announced their new DBX 5.7x28mm pistol earlier this year and the neat little gun is now filtering out to the market.

Teased at SHOT Show when the gun was in pre-production, the large format pistol uses an adjustable dual gas piston action– no buffer tubes here– with a stainless steel 8-inch threaded barrel that ends in the company’s DBX series muzzle device. Using a receiver crafted from 7075 aluminum and an M-LOK-compatible 6061 aluminum handguard, the gun is light, coming in at a hair under 3-pounds on my scales right out of the box.

I’ve been messing with one for the past couple of weeks and my initial thoughts are up in my column at Guns.com.

Meet the DBX, the latest 5.7x28mm toy

Florida-based Diamondback Firearms has announced they will begin shipping their new DBX 5.7x28mm pistol in May.

Teased at SHOT Show earlier this year when the gun was in pre-production, the compact braced pistol uses a dual gas piston action with an 8-inch threaded barrel that ends in a muzzle device.

Overall length, with the rear Picatinny-mounted, side-folding brace extended is 25.4-inches. Folded length is 16.9-inches. Alternatively, the brace can be dismounted to provide a more compact pistol that is 16.1-inches flat.

I kinda dig it.

More in my column at Guns.com.