Anyway, after everyone was WHOPEE on the new AK that has better build design, I got some more AK's to look at. THE STORY Warning: Spoilers inside! Alright. I sent the AK team an email for replacement, the usual emails come by, I wait three weeks (Chinese new year) and the AK team sends me a replacement AK. Let's count how many. Warning: Spoilers inside! ONE. TWO. THREE. THE INFO. Improvements from the previous AK2.1. 1. Fits better - noticeabally less thick. 2. Some plastic between pcbs. -The left and right PCB have plastic inbetween them. Are they special? 3. Obviously more stable. Things unchanged. 1. The popping noise is still there when you stick it in. 2. Still not a perfect fit. Also. 1. Load time... noticeabally slower. 2. Looks a lot like the R4DS ultra. PICTURES.