SKU CSSI|1BMPS1553 Category

B5 Systems Modular Platform Stock Black

B5 Systems Modular Platform Stock Black

$190.00

1 in stock

The B5 Systems Modular Platform Stock features an integral left-side folding steel hinge adjustable length of pull spring-assist cheekpiece ambidextrous fixed and limited rotation quick disconnect sling mounts and a nonslip buttpad. Attaches via 1913 Picatinny mount. Constructed of durable composite materials and steel hardware.

  • Collapsible 2 1/4" Length of Pull Adjustment
  • Adjustable Spring Assist Cheekpiece Adds 1/2" of Height. (To open pull back and push up. To close pull back and push down)
  • Integral Left-Side Folding Steel Hinge
  • Cushioned Non-slip Buttpad
  • Fixed Sling Mounts and Steel Anti-rotational QD Mounts
  • Color-Matched Steel Hardware
  • Attaches via 1913 Picatinny Mount
  • Made in the USA
  • Weight: 16.8 oz
  • Length: 8.06 in
  • Width: 1.76 in
  • Height: 4.67 in

Additional information

Upc

814927023604

Manufacturer

B5 Systems

Manufacturer part number

MPS-1553

Length

13.2000

Model

Modular Picatinny Stock

Product type

Stock

Shipping weight

1.303

FAQ

BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.

The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.

We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.

Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.

Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.

Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.

We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.

We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.

Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.

Yes. Depending on the request, we can help source specific products or assist with custom configurations.

Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.

Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.

Social Media Posts

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Customer Reviews

“Outstanding customer service.” I had a lot of questions before buying, and they walked me through everything without pressure. Super knowledgeable and easy to work with. You can tell they actually care about their customers.
Verified Customer
“Best experience I’ve had buying gear.” Professional, responsive, and honest. They helped me choose exactly what I needed without overselling anything. I’ll definitely be coming back.
Verified Customer
“Great people, great service.” Very down-to-earth and easy to talk to. They explain things clearly and make sure you understand your options. Highly recommend, especially if you’re new.
Verified customer

BJ FIREARMS LLC

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