Kinetic Development Group SRX6 Stribog Receiver Extension (6 inch)

The Kinetic Development Group SRX6 is the 6-inch M-LOK receiver extension for the Grand Power Stribog. It bolts to the front of the upper receiver via a dedicated mounting block plus four upper-receiver fasteners, six fastening points total, which makes the lockup substantially more rigid than typical drop-in handguard extensions. The result is a stable platform for forward grips, lights, lasers, and suppressor shrouding.

The extension is machined from 6061-T6 aluminum and finished with a MIL-A-8625 hardcoat anodize. M-LOK slots run along the sides and bottom of the body. The 1.7-inch internal diameter accommodates standard 9mm suppressors (Dead Air Wolfman, SilencerCo Omega 9K, Rugged Obsidian, etc.) without contact, which is the primary reason most Stribog owners install this part: the factory handguard ends well short of the muzzle, leaving any suppressor or extension exposed.

KDG also makes the SRX3 (3.25-inch version, $189.99 OpticsPlanet) for shooters who want forward real estate without the full suppressor shroud. Both fit the SP9A1, SP9A2, SP9A3, SP9A3G, and SP9A3S, plus the TR22 .22LR variant. NOT compatible with 10mm or 45 ACP Stribogs because the bolt and barrel geometry differ. OpticsPlanet stocks the SRX6 at $263.99 (SKU STR5-320).