Elevate Your Big-Bore Stribog Performance.
Are you looking to enhance the ergonomics and modularity of your .45 ACP (SP45) or 10mm (SP10) Stribog? The KDG SRX 3.25″ Rail Extension is a meticulously engineered upgrade designed specifically for the larger-caliber Stribog platforms. This extension provides a more comfortable grip, increased mounting real estate, and the robust construction KDG is known for.
Why Choose the SRX 3.25 for .45 ACP / 10mm?
- Optimized for Big Bore: While previous extensions were limited to 9mm models, this version is precision-machined to fit the unique receiver geometry of the Stribog SP45 and SP10 series.
- 3.25 Inches of Extra Real Estate: The “3.25” design isn’t just about length—it’s about functionality. That extra 1/4 inch over our older extensions allows for a second full M-LOK slot on the bottom rail, giving you the perfect position for grips, hand-stops, or bipods.
- Suppressor Ready: With a generous 1.72-inch internal diameter, the SRX 3.25 is built to shroud most common .45 and 10mm suppressors. The strategic venting ensures your hand stays cool even during the high-pressure gas discharge of larger calibers.
- Rock-Solid Mounting: Utilizing KDG’s MkII unified hardware system, the rail is mechanically fastened at multiple points to the upper receiver. This creates a monolithic-style feel that won’t shift or lose zero with rail-mounted lasers or lights.
Features & Specifications:
- Compatibility: Grand Power Stribog SP45 (45ACP) and SP10 (10mm) models with M-LOK receivers.
- Added Length: 3.25 inches (Overall extension length 6.5 inches).
- Mounting Interface: M-LOK slots at the 3, 6, and 9 o’clock positions; Continuous T-marked Picatinny rail on top.
- Internal Diameter: 1.72″ (Compatible with most large-bore suppressors).
- Material: 6061-T6 Aircraft Grade Aluminum.
- Finish: Durable Type III Hardcoat Anodized Or Cerakote (Available in Black and FDE).
- Weight: Rail: 4.2 oz | Overall (with hardware): 6.2 oz.
- SKU: Black: STR5-MK1-030
- SKU: FDE: STR5-MK1-130
Included in the Box:
- (1) SRX 3.25 Receiver Extension
- (1) Bridge Insert
- (2) Bridge Clamps
- (1) Unified Hardware Kit (T20/T25 screws)
- KDG Sticker
Note: Installation requires a muzzle device (suppressor or muzzle extension) to be used for safety, as the rail extends past the factory barrel threads. Ensure your muzzle device is compatible with .45 ACP or 10mm bore sizes.































