mk211 raufoss rounds....
if you find any for sale,you better run away very fast!!!!
i'm pretty sure the raufoss rounds are a D.D. destructive device & each "legal" round will run you about 50 bucks a pop,& another 200bucks for the stamp
watch out for the fake painted tip rds. on gunbroker.com they are out there & you dont know who is selling them-insert BATFE