Finishing your AR-15 80% lower receiver starts with the right jig. The DT13-005 80 lower jig kit uses 4140 steel drill bushings, stainless steel alignment pins, and 1/4-20 mounting screws to deliver precise, repeatable results on any standard AR-15 80 percent lower — whether you’re running a black anodized mil-spec lower or a custom Cerakote build.
What’s Included
- Right and left side plates — 6061-T6 aircraft-grade aluminum
- 4140 steel drill bushings pressed into side plates for trigger pin, hammer pin, and safety selector drilling
- 3 interchangeable top plates for fire control group pocket milling
- Stainless steel alignment pins
- 1/4-20 mounting screws and all hardware
- DT-13-005
Built for AR-15 80% Lower Jig Precision
The 4140 steel drill bushings are the most important part of any AR-15 80 percent lower jig — they guide your drill bit into the exact position for trigger and hammer pin holes every time. Three interchangeable top plates let you mill the fire control group in stages at the correct depth. Every component on this ar15 jig is individually replaceable, so one damaged plate doesn’t mean replacing the entire kit. Order additional top plates separately if needed.
Compatibility
Compatible with standard mil-spec AR-15 80% lower receivers. Works with most drill press setups and standard AR 80 lower jig configurations. Not compatible with polymer lowers or billet lowers with non-standard profiles.
Note: 80% AR-15 lower receiver not included.
Check out our 80% AR-15 lower receiver, or browse more 80% lower jigs.
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