Doublestar OOPS! AR-15 Replacement Parts Kit — 20-Piece
Original price was: $15.99.$14.99Current price is: $14.99.
Doublestar AR791 OOPS! AR-15 replacement parts kit for the most commonly lost pins, springs, and detents — 20 pieces including takedown detents, buffer detents, extractor springs, firing pin retaining pins, and selector detents. Fits in any range bag.
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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 |
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What parts are included in the Doublestar AR791 OOPS! Kit?
The AR791 includes 20 pieces: 4 takedown detent springs, 4 takedown detents, 2 buffer detents, 2 buffer detent springs, 2 firing pin retaining pins, 2 extractor springs with bumper pads, 2 selector springs/ejector springs, and 2 selector detents.
What AR-15 parts does the OOPS! Kit not cover?
The AR791 covers small springs, pins, and detents only. It does not include a bolt carrier group, charging handle, buffer, buffer spring, trigger group components, or any larger assemblies. It is intended as a spare parts kit for the small parts most often lost during handling and disassembly, not as a complete lower parts kit.
Will the parts in this kit fit any AR-15?
Yes. All parts in the AR791 kit are standard mil-spec AR-15 components and will fit any AR-15 pattern rifle built to mil-spec dimensions, including rifles assembled on 80% lower receivers.
Is this kit useful for 80% lower builds?
Yes. Small parts like takedown detents, selector detents, and buffer detents are frequently handled — and occasionally lost — during lower assembly. Having multiples of each on hand in the AR791 kit means a dropped detent doesn’t stall a build.
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