Browning Semi-Auto SA-22 Challenge Heavy BarrelBrowning Semi Auto SA 22 Challenge Heavy Barrel *Pre order Now!* The Browning SA 22 Challenge is a semi automatic . 22LR rifle, known for its takedown feature and unique bottom ejection system. It's a modern take on the classic John M. Browning design, incorporating features like a matte blued bull barrel, a Picatinny scope base, and a Grade I American walnut stock with a raised comb. This model is designed for enhanced accuracy and precision, making