With regard to the UX Gauntlet; I would suggest NOT looking at those. Their customer service is horrible and unfriendly. Instead of offering to sell parts they want you to send the gun back to them for orings and such. Also, they will try to get you to pay for their warranty repairs and or shipping. The G2 .25 I had lost accuracy and the bolt locked up after 2 weeks. Sent it back and after a month they told me that they were sending me a brand new gun. At 3 months they sent me a cobbled together USED gun and swore it was brand new. (The serial number was a lot older than mine and looked beat up, leaked as well) I asked WHY the ordeal was so lengthy and the response was "So many of these are coming back for repair". I informed them that I wanted a refund and after much deliberation they said they'd send me a check (they harshly hung up on me).
After the refund, I ordered a JTS Airacuda Max .22 from AoA for $419 and it was a better gun BY FAR.....
Not everyone has had the same experience but I feel this is something everyone should hear.