B5 Systems Akm1491 Ak Stock 4.5Mm Blk

The B5 Systems AKM1491 is a modern replacement stock built for shooters running AK-pattern rifles with factory 4.5mm folding trunnions. If you're tired of your rifle's cramped, uncomfortable factory stock and want something that actually fits your body and your shooting style, this US-made composite stock delivers ergonomic upgrades without requiring gunsmithing—it mounts directly to your existing 4.5mm pin, drop-in style.

B5 Systems engineered this stock with the adjustable length-of-pull system shooters actually want: five detent positions let you dial in the perfect length whether you're running heavy winter layers or shooting in shirtsleeves, and whether your stock gun is optimized for bench work or tactical use. The cushioned buttpad soaks up recoil and won't slip on your shoulder, while the integrated QD sling mounts and fixed attachment points give you solid, reliable ways to sling your rifle. A tactical rail cutout is milled into the stock, so you can mount optics and accessories without hassle.

Built in the USA from durable composite material with steel hardware where it matters, the AKM1491 is a straightforward upgrade that makes your AK more shootable. Note that because AK-pattern rifles have manufacturing tolerance variation from maker to maker, you may need to do minor fitting during installation, but nothing complicated—just standard mechanical adjustment if needed.

Key Features

• Five-position adjustable length of pull for custom fit and multiple shooting scenarios
• Drop-in compatible with factory 4.5mm folding trunnion and pin
• Cushioned, nonslip buttpad for comfort and secure shoulder grip
• Steel anti-rotational QD mounts plus fixed sling attachment points
• Integral optic rail cutout for mounting red dots and scopes
• Made in the USA from composite material and steel hardware

Specifications

Frequently Asked Questions

Will this fit my AK rifle?

The B5 Systems AKM1491 mounts to the factory 4.5mm folding trunnion and pin. Most modern AK-pattern rifles with 4.5mm trunnions will accept it, though manufacturing tolerances can vary between makers. You may need to perform minor fitting during installation, but no permanent modifications are required.

Can I adjust the length of pull?

Yes. The stock features five detent positions for length-of-pull adjustment, so you can customize the pull length to match your body size and shooting gear.

What mounting options does it have for slings and accessories?

The AKM1491 includes steel anti-rotational QD mounts and fixed sling attachment points for versatile carry and deployment options. It also has an integral optic rail cutout milled into the stock for mounting lights, lasers, or optics.

Is this made in the United States?

Yes, the B5 Systems AKM1491 is proudly made in the USA from durable composite material and steel hardware.