Here is a great gun magazine for Smith & Wesson 99 guns. This is an 8 round 40 s&w Factory gun magazine at a great price. This gun magazine is made from heat treated steel with a blues finish, polymer base plate and follower with a chrome wire spring. Gunclip Depot has the largest selection of Smith & Wesson gun magazines and gun clips. If you do not see the gun magazine you are looking for send us an email and we will try to locate it for you.Orders shipped within 24 hours except week-ends and holidays.