AR-15/M4 5-Position Adjustable Buttstock (Milspec)
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Wanted a smaller, less-intrusive stock for my AR without converting to a PDW setup.
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Updated at source:
Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Public Domain
Hardware List (BOM):
Qty (2) M5 x 12mm BOLTS, Qty (2) M5 x 16mm BOLTS, Qty (2) M5 x 20mm BOLTS, and Qty (2) M6 x 19mm SPRINGS
I personally used button-head hex fasteners; countersink is 10mm diameter, so other head styles can be used.
ASSEMBLY:
(2) M5 x 20mm fasteners to attach BUTTPLATE to BODY.
**PLEASE NOTE: THE FOLLOWING STEPS MUST BE ASSEMBLED ON THE RIFLE; MECHANISM ONLY HAS ENOUGH CLEARANCE FOR POSITION ADJUSTMENT.
(2) M5 x 16mm fasteners to be fully sunk into LOCK PINS assembly, acting as a "steel core" to strengthen pins.
(2) M5 x 12mm fasteners to secure BUTTON through sides, (2) M6 x 19mm SPRINGS inserted into recesses on bottom of BUTTON.
Locking mechanism may be a little tight at first, but tends to smooth out after working for a bit.
I printed with Flashforge Volcanic Rock Gray 10% Carbon-Fiber PLA-CF; 3-wall with 30% infill, 0.2 layer height on the stock body and buttplate, 0.12 layer height for the locking mechanism parts.
ENJOY!