
Availability: In Stock
Building an AR-15 from a stripped lower receiver means sourcing all the small parts that make trigger control, magazine feeding, and takedown possible—and the DoubleStar AR-15 Complete Lower Parts Kit AR270 bundles everything you need in one box. This mil-spec kit is built for shooters and builders who want quality components without hunting down springs, pins, and detents individually. Whether you're assembling your first rifle or your tenth, having a complete, reliable lower parts kit saves time and headaches on the bench.
The kit delivers mil-spec quality across the board. You get a fire control group (hammer, trigger, and disconnect) with their pins and springs, plus the bolt catch assembly and magazine catch assembly that keep your rifle running smoothly. The takedown system—front pivot pin, rear takedown pin, and dual springs and detents—handles field stripping without wobble. A trigger guard pin, pistol grip with screw and washer, and buffer detent with spring round out the package. Every component is engineered to work together, so you can focus on fitting and finishing rather than troubleshooting compatibility.
DoubleStar has long been known for no-frills, reliable AR-15 parts that work. This kit reflects that reputation: nothing fancy, nothing oversized, just the proven mil-spec dimensions and materials that have worked in millions of ARs. It's a straightforward choice for builders who trust the standard and want parts that last.
| Manufacturer | Doublestar Corp |
| Product Model | AR270 |
| Type | AR-15 Lower Receiver Parts Kit |
| Specification | Mil-Spec |
A stripped lower receiver requires a fire control group, trigger guard, pistol grip, takedown system, and buffer system components—all of which are included in this kit. You'll still need a lower receiver itself, upper receiver assembly, and stock/buffer tube to complete the rifle.
Yes. The DoubleStar AR270 kit uses mil-spec dimensions and components, which are the standard for AR-15 platforms and work with any mil-spec lower receiver.
No. This is a parts kit only. You will need to source a stripped lower receiver separately to use these components.
The kit contains all the components needed, but installation requires some mechanical skill and proper tools (including appropriate punches and a work vise or armorer's block). If you're new to AR assembly, consider having a gunsmith do the work or consulting detailed build guides before starting.

SKU: 121688562 • Width: 5in • Height: 2in • Depth: 7in • Weight: 0.56oz





Availability: In Stock
Building an AR-15 from a stripped lower receiver means sourcing all the small parts that make trigger control, magazine feeding, and takedown possible—and the DoubleStar AR-15 Complete Lower Parts Kit AR270 bundles everything you need in one box. This mil-spec kit is built for shooters and builders who want quality components without hunting down springs, pins, and detents individually. Whether you're assembling your first rifle or your tenth, having a complete, reliable lower parts kit saves time and headaches on the bench.
The kit delivers mil-spec quality across the board. You get a fire control group (hammer, trigger, and disconnect) with their pins and springs, plus the bolt catch assembly and magazine catch assembly that keep your rifle running smoothly. The takedown system—front pivot pin, rear takedown pin, and dual springs and detents—handles field stripping without wobble. A trigger guard pin, pistol grip with screw and washer, and buffer detent with spring round out the package. Every component is engineered to work together, so you can focus on fitting and finishing rather than troubleshooting compatibility.
DoubleStar has long been known for no-frills, reliable AR-15 parts that work. This kit reflects that reputation: nothing fancy, nothing oversized, just the proven mil-spec dimensions and materials that have worked in millions of ARs. It's a straightforward choice for builders who trust the standard and want parts that last.
| Manufacturer | Doublestar Corp |
| Product Model | AR270 |
| Type | AR-15 Lower Receiver Parts Kit |
| Specification | Mil-Spec |
A stripped lower receiver requires a fire control group, trigger guard, pistol grip, takedown system, and buffer system components—all of which are included in this kit. You'll still need a lower receiver itself, upper receiver assembly, and stock/buffer tube to complete the rifle.
Yes. The DoubleStar AR270 kit uses mil-spec dimensions and components, which are the standard for AR-15 platforms and work with any mil-spec lower receiver.
No. This is a parts kit only. You will need to source a stripped lower receiver separately to use these components.
The kit contains all the components needed, but installation requires some mechanical skill and proper tools (including appropriate punches and a work vise or armorer's block). If you're new to AR assembly, consider having a gunsmith do the work or consulting detailed build guides before starting.
SKU: 121688562 • Width: 5in • Height: 2in • Depth: 7in • Weight: 0.56oz
