This Mountain Tactical Tikka T3 Magazine Single Round Insert allows you to use your existing magazine for your Tikka T-3 rifle and create an efficient single round loading device. This insert is made from durable, long lasting Delrin to ensure a lifetime worth of use. Simply pop the insert into your magazine and you're all set to effortlessly single load rounds into your rifle. It's the perfect addition for your varmint or long range shooting adventures. Works with all calibers!