I'm writing this review after receiving my first tax stamp, an eFile Form 1. If I could levy any criticisms of National Gun Trusts, the example documents and videos for the eFile Form 1 are oriented towards a suppressor rather than an AR Pistol to SBR conversion. In spite of the short-coming, their customer service via email was outstanding and prompt including timely responses on a Sunday afternoon. Having received my approval after a short 54 day wait, shorter than the stated 60 day goal, I'm well satisfied with the quality of service from National Gun Trusts.