ACE Folding Mechanism For AR-15 M4 Stocks Without Boss Black

Turn any of your favorite AR-15 ACE stocks into a side folder with the ACE Folding Stock Mechanism. This folding stock mechanism can only be mounted to fold to the left. This is a great addition for users who prefer to pack their rifles in the small spaces for storage or transportation. This FSM fits between the Receiver Block and Modular Stock and will add .75" to your LOP, and only weighs 3.5 oz.

Features and Specifications:
Manufacturer Number:A504
Fits between the receiver block and modular stock
Perfect for turning your AK-47 into a side folder
Can fold left only
Adds .75" to length of pull
Weighs 3.5 oz
Matte Black

Fits:
ACE Modular Receiver Blocks Without the BOSS

Note: If you are using this with a DoubleStar receiver block, we recommend using the FSM with BOSS (a raised oval portion) for added stability.