Holosun Red Dot Reflex Sight (HS510C) Type_42 Cal it features a precision load

it features a precision load cell with 1/10th grain accuracy and constant readout up to 500 grains

It's applies quickly and easily without migrating

Recommended for use in barrels with twist rates from 1 in 7" to 1 in 8" only

Construction consists of a high quality brass core and coupling with bronze bristles

and features interchangeable component parts along with bayonets and accessories

Holosun Red Dot Reflex Sight (HS510C) Type_42 Cal it features a precision loadThe HS510C is an open reflex optical sight designed for rifle and carbine applications. Features include Holosuns Super LED with up to 50k hours battery life, Multi Reticle System, Solar Failsafe, and Shake Awake. Key Features: Solar Failsafe & Shake Awake Multiple Reticle System MRS: Circle Dot; 2 MOA Dot; 65 MOA Circle Multilayer Reflective Glass Up to 50,000 Hours Battery Life (Setting 6) 12 Brightness Setting: 10 DL & 2 NV Compatible Convenient