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NcStar
Overview
The NCSTAR 3-9x42 Scope features a 3 MOA red dot that provides quick target acquisition in various lighting conditions, thanks to its bright red reticle. Designed to fit both Weaver and Picatinny rails, this optic is versatile and easily mountable on a range of platforms. It is commonly found on carbine gas system builds chambered in 5.56 NATO, making it a practical choice for those looking to enhance their shooting accuracy and speed.
NCSTAR 3-9x42 Scope w/ 3 MOA Red Dot Fits Weaver & Picatinny Rails - STP3942GDV2
Prices checked
NCSTAR 3-9x42 Scope w/ 3 MOA Red Dot Fits Weaver & Picatinny Rails - STP3942GDV2 ranked #68 of the 220 optics builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #111 of the 587 optics builders have added.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, but today 2 of the 6 retailers we track have it in stock. Buying today, the lowest price is $110.22 at KY Gun Company, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every optic by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Red Dot & Optic Guide →Check it against the live catalog:
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Builds in the community that include the NCSTAR 3-9x42 Scope w/ 3 MOA Red Dot Fits Weaver & Picatinny Rails - STP3942GDV2
| Build | Parts | Total |
|---|---|---|
![]() | 17 | $2877.82 |
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