The B5 Systems Sierra K Receiver Extension in Coyote is a rugged and reliable buffer tube built specifically to fit the B5 Systems Sierra stock platform. Designed with compact builds and professional applications in mind, this extension offers precise fitment, structural strength, and a streamlined profile for enhanced maneuverability. The Coyote-colored coating gives the extension a tactical finish that pairs perfectly with earth-tone AR builds.
This receiver extension is constructed from high-strength aluminum, offering a robust and lightweight platform for AR-15 rifles or pistols using the Sierra K stock. The Coyote exterior finish is durable, non-reflective, and built to withstand field abuse without adding unnecessary bulk. With tight manufacturing tolerances and mission-ready durability, the Sierra K extension is ideal for shooters building minimalist, high-performance AR configurations.
B5 Systems Sierra K Receiver Extension Specifications
Manufacturer: B5 Systems
Model: Sierra K Receiver Extension
Fit: B5 Systems Sierra Stock
Color: Coyote
Material: High-strength aluminum
Finish: Coyote-coated (non-anodized)
Application: AR-15 rifles and pistols configured for Sierra K stock compatibility
More Information
Condition
New in Box
Finish Per Color
Coyote Tan
Manufacturer
B5 Systems
Manufacturer Part Number
SRK-1657
Model
Sierra K Receiver Extension
Type
Stocks
UPC
814927024762
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
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