ive made a couple of purchases online from this store and ive got to say awesome outfit. i bought a bump fire stock recently and damaged the slide block that replaces the grip trying to adapt it to a polymer lower.(this was my fault not the product.) i sent an email describing my mistake and«asking to purchase a new one«i was informed that they didnt sell individual parts but they would send me a new one at no charge !!! i offer to pay and no just sent me a new one. theses guys rock. love the product that bump fire is awesome