EMG / Salient Arms International BLU w/ Tier One Competition Slide Kit GBBP (Black & Gold / Blackout) Iron Sights The Hopup Chamber M4i unit

The Hopup Chamber M4i unit is designed to accept 21

but still having options for necessary attachments whether they're mounted to the front

Increased gear thickness provides higher bearing surface and improves structural durability

and such as wood grain feeling of each part parts shape and grip

enhance traction and secure grip

EMG / Salient Arms International BLU w/ Tier One Competition Slide Kit GBBP (Black & Gold / Blackout) Iron Sights The Hopup Chamber M4i unitMay come with orange tip. Features Lightweight, rugged injection molded polymer frame, with interchangeable backstraps and "stippled" texture for positive grip surface, designed off of the original SAI specifications for optimized ergonomics Frame integrated 20mm accessory rail is ideal for mounting weapon lights and other accessories Fiber optic front sight and SAI rear sight, designed specifically for single handed manipulation (compatible with all