g17 has bowie tactical concepts slide and many upgrades such as hop up and barrel. Slide alone is worth $240.00 USD and is very rare. G17 will come with 2 TM G17 mags and belt holster. No surefire x300, unless u offer $70 more. Armorer Works 5.1 is bone stock but will come with 6 mags, 2 extended 4 regular all WE tech and have upgraded nine ball gas route seal & custom 3D printed base plates to ensure they can be dropped on concrete 6 feet high and remain unharmed. No lowballs. Price is firm.