The Ergo F93 Pro Stock is an 8-position collapsible buttstock designed for AR-15/AR-10 style rifles and shotguns, featuring a locking mechanism that provides the rigidity and stability of a fixed buttstock with the length of pull options of an adjustable stock. It offers a long length of pull, a fixed cheek piece for consistent cheek weld, and weighs ~1.3 lbs.
Included components are: Overmolded carbine-length buffer tube, Polymer Ergo F93 Stock, standard castle nut, and ambidextrous sling plate.
Perfect for clone-correct builds of GWOT – era rifles, Navy EOD CQBR clones, etc.
Key Features & Specifications:
- Positions: 8-position adjustability for variable length of pull.
- Stability: Locks into place to eliminate rattle, offering a “fixed stock” in each of the 8 available locking positions.
- Dimensions: Approximately 8 inches (collapsed) to 12 inches (extended) from receiver to butt plate.
- Construction: Durable synthetic polymer with a rubber recoil pad.
- Sling Mounts: Includes 2 quick detach (QD) sling points, 3 web sling points, and 2 sling hook attachment points.
- Color: Black.
These are genuine new old stock (NOS) units from legacy production.
They are not reproductions, not reissues, and not currently in production.
Availability is strictly limited to on-hand inventory only.









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