The Browning T-bolt .22lr is an excellent rimfire bolt action rifle with a stragight pull bolt made by one of Americas oldest gun manufacturers. The Browning factory T-bolt 10rd double helix magazine is a unique design that is lighter and easier to handle than other rotary rimfire magazines. The polymer body is lightweight and durable, and the smoke color allows for easy identification of remaining rounds in the magazine. The Browning T-bolt 10rd double helix magazine uses a torsion drive spring and interlocking  gear to properly time and feed the rounds reliably. Easy to load, use, and unload, the Browning T-bolt 10rd .22lr double helix magazine is a unique magazine for a unique bolt action rifle.