UTG PRO AK Side Folding Stock for Standard Straight Tang Receivers - Black - RBU47FS01 - UPC 4717385557536
Product Description
The UTG PRO AK Side Folding Stock (RBU47FS01) is an advanced, American-made stock upgrade engineered to modernize stamped-receiver AK-47, AK-74, and AKM rifles. Designed to mount directly to standard straight-tang receivers without requiring permanent modifications or additional external adapters, this high-strength glass-fiber reinforced polymer stock combines compact storage with full ergonomics.
A key highlights of the RBU47FS01 is its right-side folding mechanism. By folding to the right side of the receiver, the stock maintains full clearance for side-mounted optic rails and receiver scope mounts, allowing shooters to transport or fold the firearm without removing their primary optics. The spring-loaded locking hinge deploys smoothly and locks securely in both the extended and folded positions via a positive-engagement left-side push button.
Built for personalized shooter ergonomics, the stock features a 5-position adjustable Length of Pull (LOP) ranging from 13.59" to 16.42" with 0.71" adjustment increments. An angled, non-slip rubberized buttpad cushions recoil force and stabilizes the stock in the shoulder pocket, while integrated front and rear Quick-Detach (QD) sling swivel sockets accommodate modern tactical sling setups. Proudly made in the USA, this stock also counts as one U.S.-made compliance part under 18 U.S.C. § 922(r).
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Direct fit for most common stamped AK-47 / AK-74 / AKM pattern receivers with standard rear straight tangs (e.g., WASR-10, RAS47, VSKA, PSAK-47, Arsenal stamped models). Note: Fits straight-tang stamped receivers only. Will NOT fit milled receivers, slant-cut receivers, Yugo/Zastava pattern rear trunnions, or underfolder/side-folder trunnions without receiver conversion. Counts as 1 U.S. 922(r) compliance part.
- Clear firearm completely, remove dust cover, recoil spring assembly, and factory wood/polymer stock screws.
- Depress hinge button to unfold the RBU47FS01 stock adapter, revealing the internal receiver interface block.
- Slide adapter base flush into the straight-tang receiver socket, tighten inner retention bolt using supplied 3mm hex key, and reinstall dust cover.
Key Features
- Proudly Made in USA (UTG PRO): Precision-molded from heat and impact-resistant glass-fiber reinforced polymer.
- Right-Side Folding Geometry: Folds to the right side of the receiver to maintain full clearance for side-mounted scope rails and optics.
- 5-Position Adjustable LOP: Adjusts length of pull from 13.59" to 16.42" in 0.71" increments for custom fitment.
- Positive Push-Button Lockup: Spring-loaded deployment mechanism locks solidly in both folded and deployed positions.
- Integrated Front & Rear QD Sockets: Features ambidextrous Quick-Detach sling swivel housing points.
- Rubberized Recoil Buttpad: Angled non-slip rubber buttpad reduces felt recoil and prevents shoulder slip.
- 18 U.S.C. § 922(r) Compliant: Counts as 1 U.S. manufactured part for AK build compliance.
Product Specifications
- Brand: UTG PRO (Leapers, Inc.)
- Model: AK Side Folding Stock (Straight Tang)
- MPN / Part Number: RBU47FS01
- UPC: 4717385557536
- Receiver Compatibility: Stamped AK-47 / AK-74 / AKM Straight-Tang Receivers
- Folding Direction: Right-Side Folding
- Length of Pull (LOP): 13.59 in – 16.42 in (345 mm – 417 mm)
- Material: Glass-Fiber Reinforced Polymer
- Finish / Color: Matte Black
- Mass: ~19.65 oz (557.0 g)
