I picked up a LNIB Springfield V-10 Ultra Compact this weekend at a gunshow. I really didn't know what to expect after reading the comments on most of the forums. This was my 1st experience with a "ported" gun and the comments were all over. The range trip resulted in 1 FTE on the 1st mag, very little 'muzzle" blast, very little recoil-compared to my Defender Plus and with the addition of a arched main spring housing- a new addition to the carry rotation. The gun didn't seem to be any louder- which was one of the comments and the gun really like my reloads using WST powder-could be the reason of low muzzle flash.