I am curious about the laws reguarding these. I hav been looking to purchase a preban "shorty" AR, with full birdcage suppresor, and telescoping stock. I know that you can buy them in MA, as long as they are Preban, but what is the law on buying them out of state, say in NH and having them transferred to MA, provided they are preban? Also, does anyone have a lead to someone or a place selling one? Thanks.