youll need a stock adapter for a good cheek weld on the stock
-It's a heavy gun.(if you plan an carrying it for long distances)
-the bipod can make the poi change by up to 4 inches
-model specific mags are expensive there decent though but limited to five rounds(not that it really matters the way things are going)
-real sig cheek riser is expensive.
-flattop models are not the easiest to flip as everyone wants the diopter model with rail.
-the Nea lower is of a different finish it's going to look terrible installed unless you creakote the whole rifle which will lower its resale.
-the nea lower also doesn't accommodate the sig style stock so you will maybe have to buy a dmr style ar 15 stock. Also they have some legal precidings with the Beowulf mags so I'm not even sure installing the lower is even worth it now. Unless you want more mag options through ar 15 style mags maybe in a shtf type scenario.
-gs designs adapter requires mag modifications to p mags.
- not terribly accurate for price.
-trigger is not replaceable (to my knowledge)
The good things are it's
- solid reliable quality rifle
- iron sights are amazing best sights on a black rifle period (if you get them I guess)
-good quality fit and finish
-proven platform
-good mag design
-nice trigger
-trigger guard flips to the side for gloves.
-built in bi pod is kind of handy and nice.
-Herron carbine is nicely balanced
-I like the green black is just ok.
Unless it's something you just have to have there is better options for what your using it for. I mainly keep mine because I really don't need optics with the diopter sights and I like them they feel great.
Ok so much nonsense in this thread that it is difficult where to start, and I hate picking on people, but these two posts really stand out for me.
If you are looking at getting a flat top model, there is no need for a cheek riser - just get a decent scope with the appropriate height rings and you are set.
If you are planning on shooting 'yotes at 300m, I'm guessing a decent variable in the 3-9 power or there abouts is probably where you're headed.
The next bit of attributes:
- poi shift with the OEM bipod: simple fix; don't use it. Mount a Harris or similar up near the barrel trunion if you are set on bi-pod use. (You'll have poi shift with anything else too, unless it mounted to a float tube).
- it's heavy : no, not really any heavier than a similar rifle of equal size and use. The regular SA flat top rifle without it's OEM bipod fixed is 8lbs 6oz.
- model specific mags are expensive: factory OEM mags are not cheap, but they are also bomb-proof and dead nuts reliable. Dominion mags are Chinese knock-offs, cost $30 each and are still dead nuts reliable. STANAG mags and their method of securing in rifle receivers blow in comparison. You will NEVER have a bolt ride-over-round failure with a SA mag if the mag is attached to the gun, unlike a STANAG.
- sig cheek riser is expensive : moot, as you won't need the bloody thing in the first place.
- flat top model isn't easy to flip? - wtf?

- NEA lower? Skip it, and keep it OEM. The only people with hard-ones for STANAG mags are neckbeard wannabes.
- GS design mag mod requires mods to PMags - who gives a sh!t? Stick with O-E-motherf&ckin'-M mags (orthechineseknockoffdominionmags).
- NOT TERRIBLY ACCURATE FOR THE PRICE: whooooboy. 10 rounds into a 10cmx10cm square at 300m guaranteed. Most guns I've seen will beat that like a red headed step child. I had one test target that is 2.25" group (10 rounds) at 300m. If you suck at shooting, don't get a Swiss Arms, because it will quickly point out how bad you blow.
- trigger is not replaceable: no, it isn't (unless you get a sniper version installed) and that is a good thing.
It comes standard with a match grade two-stage service trigger set to around 5.5lbs first stage breaking at around 6 lbs. as far as triggers in service type guns goes, this is one of the best there is- from the factory.
What I can't understand is guys are tripping over themselves pumping up the ACR and the B&T AP that are going for, what? $3600, $4000 when there are guys bumping their F/S ads in the EE trying to sell slightly used Sigs for $2600-3000?
Get a Swiss Arms, you won't regret it.