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B5 Systems
The B5 Systems AK stock in plum is a purpose-built replacement for shooters running AK platforms with factory 4.5mm folding trunnions. If you're tired of the uncomfortable geometry and limited adjustment of mil-spec folder, this American-made upgrade transforms your AK's ergonomics without requiring permanent modifications. It drops in via the factory 4.5mm pin—just bolt it on and you're running a modern, adjustable platform.
B5 engineered this stock for real-world use: the collapsible design lets you dial in length of pull to your body and gear configuration, the cushioned buttpad absorbs recoil without slipping, and the integrated rail cutout gives you mounting options if you're running optics on a dust cover. Steel QD mounts handle sling attachments without flex, and fixed anchor points keep everything stable under use. The plum finish is distinctive, durable, and matches other B5 furniture if you're building a cohesive look.
Weighing just 12.5 ounces and built from composite material with steel hardware, this stock is tough enough for hard use without adding unnecessary bulk. B5 manufactures these in the USA, so you're getting quality control and support from a brand that stands behind its kit. Note that fitment may require minor adjustment depending on your trunnion tolerances—that's normal across the aftermarket AK world—but once dialed in, you've got a rock-solid upgrade that'll outlast your rifle.
| Weight | 12.5 oz |
| Length | 9 in |
| Width | 1.2 in |
| Height | 4.33 in |
| Finish | Plum |
| Material | Composite with steel hardware |
| Trunnion Compatibility | Factory 4.5mm folding trunnion |
This stock is designed for AK platforms with factory 4.5mm folding trunnions and mounts via the factory 4.5mm pin. Depending on your manufacturer's tolerance range, some minor fitment work may be required, but installation is straightforward once fitted.
Yes. The stock features a collapsible design that lets you adjust length of pull to suit your body size and gear setup, giving you better control and comfort compared to a fixed folder.
Absolutely. The stock includes fixed sling mounts and steel anti-rotational QD mounts, so you can run slings however you prefer without any rattling or rotation under pressure.
Yes, there's an optic rail cutout integrated into the stock design, giving you mounting real estate for backup sights or secondary optics if you're running a dust cover setup.
B5 Systems
The B5 Systems AK stock in plum is a purpose-built replacement for shooters running AK platforms with factory 4.5mm folding trunnions. If you're tired of the uncomfortable geometry and limited adjustment of mil-spec folder, this American-made upgrade transforms your AK's ergonomics without requiring permanent modifications. It drops in via the factory 4.5mm pin—just bolt it on and you're running a modern, adjustable platform.
B5 engineered this stock for real-world use: the collapsible design lets you dial in length of pull to your body and gear configuration, the cushioned buttpad absorbs recoil without slipping, and the integrated rail cutout gives you mounting options if you're running optics on a dust cover. Steel QD mounts handle sling attachments without flex, and fixed anchor points keep everything stable under use. The plum finish is distinctive, durable, and matches other B5 furniture if you're building a cohesive look.
Weighing just 12.5 ounces and built from composite material with steel hardware, this stock is tough enough for hard use without adding unnecessary bulk. B5 manufactures these in the USA, so you're getting quality control and support from a brand that stands behind its kit. Note that fitment may require minor adjustment depending on your trunnion tolerances—that's normal across the aftermarket AK world—but once dialed in, you've got a rock-solid upgrade that'll outlast your rifle.
| Weight | 12.5 oz |
| Length | 9 in |
| Width | 1.2 in |
| Height | 4.33 in |
| Finish | Plum |
| Material | Composite with steel hardware |
| Trunnion Compatibility | Factory 4.5mm folding trunnion |
This stock is designed for AK platforms with factory 4.5mm folding trunnions and mounts via the factory 4.5mm pin. Depending on your manufacturer's tolerance range, some minor fitment work may be required, but installation is straightforward once fitted.
Yes. The stock features a collapsible design that lets you adjust length of pull to suit your body size and gear setup, giving you better control and comfort compared to a fixed folder.
Absolutely. The stock includes fixed sling mounts and steel anti-rotational QD mounts, so you can run slings however you prefer without any rattling or rotation under pressure.
Yes, there's an optic rail cutout integrated into the stock design, giving you mounting real estate for backup sights or secondary optics if you're running a dust cover setup.
