You can find the B5 Systems Sierra K Stock Black here Fast $9.95 shipping! Orders over $200 ship for free!

The B5 Systems Sierra K Stock was designed for use on PDW and compact weapon systems. Features include a reduced overall size and slim cheek profile, snag-free adjustment lever, limited rotation QD sockets, integral fixed sling mounts, internal tensioners, and an anti-slip buttpad. Mounts via the proprietary B5 Systems Sierra K Extension tube. Made In the USA.
***Installing the Sierra K on a standard length Mil-Spec Buffer Tube will not allow the stock to fully collapse**

Color: Black
Weight: 6.6 oz
Length: 5.63 in
Width: 1.5 in
Height: 3.8 in

Features:

• Optimized for PDW and Compact Weapon Systems
• Low-Profile Adjustment Latch
• Slim-Profile Ergonomic Cheek Weld
• Color-Matched Steel Hardware
• Ambidextrous Fixed Sling Mounts and Limited Rotation QD Mounts
• Mil-Spec Materials and Finishes
• Mounts via Sierra K Receiver Extension Kit