The Sylvan Arms SA5 Pro is a Gen 5 right-folding stock adapter for compatible AR-15 platforms. CNC-machined in the USA from 4140 steel, it is designed to reduce the folded length of a compatible rifle or pistol configuration. The adapter includes a 1045 steel bolt extension and a castle nut wrench.

Its right-fold orientation directs the stock toward the ejection-port side on a standard build. The adapter uses a standard 1-3/16" x 16 thread and is specified for .223/5.56, .308, and most 9mm platforms.

Key Specifications

• The model is SA5 Pro Gen 5 for compatible AR-15 platforms.
• The folding direction is right-hand, toward the ejection-port side on a standard build.
• The adapter is made from 4140 steel and finished in black.
• The thread specification is 1-3/16" x 16.
• The stated platform fit covers .223/5.56, .308, and most 9mm configurations.
• The package includes a 1045 steel bolt extension.
• Installation equipment includes a castle nut wrench.
• The adapter is specified as compatible with 300 Blackout AR platforms.
• The adapter does not work with Tippmann 22 or LWRC pistols.

The SA5 Pro provides a compact folding configuration while retaining a straightforward installation format and compatibility with the listed AR platforms. Its steel construction, included installation wrench, and supplied bolt extension make it a practical component for compatible builds.