Well I lost my sling mount bolt in the field cause I'm clumsy like that. Luckily this place has a complete assortment of replacements for clumsy people like myself. So I bout it and got it and installed it and well its Excellent cause its strong and hasn't gave me problems. You cant really mess up a bolt to bad, but it is the only one on my gun without the paint worn off from taking my gun apart all the time to lube it.