A field strip goes fine until a detent pings across the floor or a spring disappears into the carpet. The Doublestar AR791 OOPS! Kit is a 20-piece collection of the small parts most likely to go missing during a build, cleaning session, or range day — stocked in multiples so a single dropped part doesn’t end your session. Compact enough to toss in a range bag, pack with a build kit, or keep in a parts drawer as insurance.
Doublestar AR791 OOPS! Kit Contents
- 4x takedown detent springs
- 4x takedown detents
- 2x buffer detents
- 2x buffer detent springs
- 2x firing pin retaining pins
- 2x extractor springs with bumper pads
- 2x selector springs / ejector springs
- 2x selector detents
20 pieces total. All parts are AR-15 mil-spec replacements for the most commonly lost or damaged small components.
When to Reach for the OOPS! Kit
This kit covers the springs, detents, and pins that most often walk off during a disassembly. A takedown detent launches, a selector detent disappears, a firing pin retaining pin rolls under the bench — the AR791 has a spare for each. It is also a practical companion for 80% lower builds where small parts get installed multiple times before the build is dialed in. Keep one in your range bag and one with your build kit.
Doublestar AR791 Specifications
| Manufacturer | Doublestar Corp. |
|---|---|
| SKU | AR791 |
| UPC | 841348100294 |
| Type | AR-15 spare parts / replacement kit |
| Piece Count | 20 pieces |
| Contents | Takedown detents & springs, buffer detents & springs, firing pin retaining pins, extractor springs w/bumper pads, selector springs, selector detents |
| Compatibility | AR-15 mil-spec pattern rifles |










