My version takes Sig 226 (and also CZ 75) mags. If I was do get another, I’d go with the Glock mag version. Savage1r summed it up pretty good. They work, I’ve never had a malfunction and shot just about any 9mm I put my hands on and it actually is used to shoot any crappy ammo that I don’t want to put through my pistols.
I did put a Blue Force Gear (not sure if they’re still made) front sight assembly on mine…uses an AR-type post and is much more durable. I’m always leery about the rear peep sight breaking, but it’s held up fin and if you store it folded, it’s protected. The trigger pull is extremely heavy. There are tutorials on smoothing it out, but I haven’t. Aside from the heavy pull, accuracy out to 100 meters is excellent for mine. I guess they have railed fore-end options now. I added a piece of rail underneath the bottom grip on mine for the use of a pistol grip/light combo which works well.
All in all, if you’re looking for a compact pistol caliber carbine which could also match your CCW mags (if you carry a Glock); accept that 100 meters is about maximum for effectiveness and can live with the stock sights, it’s does quite well for the niche it fills.
ROCK6