My new APC and multiple variations

Image 1 and 2: initial APC, based on M113 and BTR-D Image 3: tank destroyer based on Pvrbv 551 Image 4 and 5: self propelled mortar based on 2S9(by looks only) Image 6 and 7: AA based on Strela - 10M2 Image 8: light tank based on Sprut - SD