Holosun HS515GM 2Moa Red Dot/ 65Moa Circle CASIO This blowback action SMG does

This blowback action SMG does fire from the open bolt just like the M3 firearms did

Designed to securely attach to the trigger guard and rail of the GLOCK® 43X MOS

single/double action

It's slim in design only

Holosun HS515GM 2Moa Red Dot/ 65Moa Circle CASIO This blowback action SMG doesThe HS515GM is an ultra durable 20mm micro sight designed for hard use rifle and carbine applications. The HS515GM is made from 7075 aluminum and includes clear, removable rotating lens caps, a QD lower 1 3 co witness (1. 63) mount, and is IP68 certified waterproof and dustproof rating. Additional features include our MRS (Multi Reticle System) with Red Super LED, 8 daylight and 4 night vision compatible reticle intensity settings, Shake Awake