GC_UPC Glock Pg3150201 G31 Gen4 357 Sig 10+1 4.49" Steel Barrel, Matte Black Serrated Steel Slide, Black Polymer Frame W/Picatinny Rail, Black Texture W/Interchangeable Backstrap Grip $517.65 PG3150201 show more like this Firearms $18.45, Free over $500 Shooting Surplus GC_UPC Glock 31 Gen 4 357 SIG 4.48in Black Pistol - 10+1 Rounds $549.99 PG3150201 show more like this Free Shipping Over $49, Free In-Store Pick Up SPWH