Bullseye289
FNG
- Joined
- Oct 27, 2025
- Messages
- 11
Has anyone put together a 5.7x28 bolt gun with a folding or sliding stock? Looking to buy/build one as a compact truck gun for varmint control.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I am not aware of such a rifle, but I think it is a cool idea.
There have been several threads about this, but the sensible argument always seems to be “why?” What do you get from 5.7x28 as opposed to .22 Magnum or .223?
I picked up a S&W 5.7 awhile back to evaluate...it's much more interesting than I thought it would be, both the gun and the cartridge.
My take on the cartridge is that it's kinda like the modern equivalent of .30 carbine, fitting the role between pistol cartridges and rifle cartridges. It'll reach farther and hit harder than rimfire or pistol cartridges, but won't obliterate a rabbit like a .223 will. For a general purpose plinking, small game, or survival rifle, it might be pretty optimum if you're not factoring in emergency ammo availability, or comparative ammo costs.
It definitely won't do what a full rifle cartridge will. But it is a lot hotter and flatter than a standard pistol cartridge or .22mag, especially at distances beyond 75 or 100yds, but nothing like a .223. And you can carry an awful lot of it by weight compared to .223, with not much more of a weight penalty over .22mag. Probably the most minor advantage is that, unlike .22mag, you can handload it and tune a load to your rifle.
The biggest drawback has to be the expense - it's 2x the cost of .22mag, and about the same cost as .223. I also would put it in the same category of .22mag in personal self defense, until proven otherwise by actual field data could be found, with the exact bullets I'd be using. I've heard too much about .mil usage being underwhelming in that role to trust it for that, beyond what I'd trust a .22 mag for.
I'm not sure I'll be keeping mine, but I was surprised at how interesting it was, and at the performance it provided. For a general plinking or really lightweight emergency gun, like in a plane for to keep in an offroad vehicle, it could be a great option, depending on the gun design. I'm far more open to the idea now than I was before I got the S&W.
What kind of performance - ballistic and terminal - can you get out of a 16” 5.7x28?
I’ve always heard this was a nightmare due to the lacquer coatings?Probably the most minor advantage is that, unlike .22mag, you can handload it and tune a load to your rifle.
Rough guess is about 2300fps, with a .40gr vmax. That'll take a coyote out to 100yds with a vitals hit, definitely a goose or a rabbit without excessive meat damage.
Where can a person legally shoot a goose with a rifle?
The S&W M&P FPC folding carbine with a 16" barrel folds down to a hair over 16" and weighs about 4#'s. Comes with 3 22rd metal mags (same mags as the 5.7 pistol) that all store on board. Pretty slick and handy carbine.
I think I read somewhere that the lacquer was required for ejection with the P90 but wasn't for the newer guns.