XS Sight Systems AR-15 Adjustable Csat Combat Rear Sight Black
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XS Sights
Overview
The XS Sight Systems AR-15 Adjustable Csat Combat Rear Sight is a black rear sight designed to provide precise aiming capabilities for your rifle. Featuring an adjustable style, this sight allows you to fine-tune your aim based on distance and conditions, making it a valuable addition for builders looking to enhance their accuracy. This rear sight is commonly found in builds utilizing a pistol gas system and chambered in 5.56 NATO, providing a solid performance for compact configurations.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the XS Sight Systems AR-15 Adjustable Csat Combat Rear Sight Black to a build in February 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 3 of the 4 retailers we track have it in stock. Prices barely moved in August 2026, holding around $51.24, so there haven't been real sales lately. Buying today, the lowest price is $50.49 at Ammunition Depot.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
Not sure which rear sight to pick?
We ranked every rear sight by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Rear Sight Guide →Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 2 →Builds in the community that include the Xs Sight Systems Ar-15 Adjustable Csat Combat Rear Sight Black
| Build | Parts | Total |
|---|---|---|
 | 17 | $1001.77 |
 | 30 | $2970.38 |
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