"SENTINEL" STRIKE INDUSTRIES AR-15 w/GRIDLOK® HANDGUARD SYSTEM OPTICS It shares the same spring

It shares the same spring as the Fusion Engine™ with both light and heavy spring options available to adjust the loading force

Large competition slide release

we will be working very closely with both companies to ensure this is the most accurate to the real-life counterpart as possible

and large sizes

"SENTINEL" STRIKE INDUSTRIES AR-15 w/GRIDLOK® HANDGUARD SYSTEM OPTICS It shares the same springFeatures Aluminum alloy receiver with licensed Strike Industries roll marks Pre installed aluminum free float Strike Industries licensed GRIDLOK Main Body M LOK handguard with authentic markings The GRIDLOK Main Body is equipped with top Picatinny rail segments for optics or sights, a front integrated flip up sight and bottom Picatinny section with integrated M LOK slots In line MOSFET, 8mm bearing gearbox with quick change spring guide fully