Db15 300blk pistol

[(M)]

I'm thinking of building a 300aac pistol but the db15 pistols look pretty cool and are around what I would spend building on one at current prices. Most of the YouTube videos are negative towards diamondback but they all seem to be the 5.56 version. Does anyone have any positive experience with these or should i stay clear? As always thanks for any info.

 

[C'mon man!]

They have a 10.5" barrel with a carbine gas system, shouldn't it be a pistol gas system with that barrel length?

From what I'm reading, carbine gas on 300 blk is for 16" barrels or longer. They must have a huge gas port on that barrel.