The SA5 Pro AR-15 Folding Stock Adapter from Sylvan Arms is a precision-engineered upgrade built for strength, speed, and compact utility. Machined from rugged 4140 steel and weighing just 9.4 oz, it's 250% stronger than the Gen4 version without sacrificing portability. Featuring an adjustable hinge tension, improved hardened buffer pin, and enhanced locking mechanism, the SA5 delivers solid performance under stress. Two integrated QD sling points provide tactical flexibility, while the included 1045 steel bolt extension ensures compatibility with standard AR-15 and most AR-10 builds. Proudly made in the USA, this adapter is built to withstand the mission and fold on your terms.
Platform: AR-15 Compatible (also fits most AR-10 builds)
Material: CNC-Machined 4140 Steel
Weight: 9.4 oz
Color: Black
Strength: 250% Stronger than Gen4 Adapter
Fold Direction: Right-Fold
Buffer Pin: Improved and Hardened
Threading: Standard 1-3/16” x 16
Hinge: Adjustable Tension with Improved Locking Mechanism
QD Mounts: 2 Integrated Quick Detach Points
Bolt Extension: Includes 1045 Steel Extension (for standard AR15 BCGs)
Compatibility: Mil-Spec AR-15, Most AR-10, 9mm BCGs w/ .625 ID (after removing rear pin/weight)
Incompatibility: Not compatible with Tippmann 22 or LWRC Pistols
Installation: Installs in under 5 minutes; all tools included
Origin: Made in the USA
Mount Type: Screw-on Adapter – No Additional Parts Required for Standard AR-15 BCG
Use Case: Designed for Compact Concealment, Tactical Utility, and User-Serviceability
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