XS Sights

XS Sight Systems AR-15 Adjustable Csat Combat Rear Sight Black

XS Sights Xs Sight Systems Ar-15 Adjustable Csat Combat Rear Sight Black - Rear Sight for AR-15 - view 1
XS Sights Xs Sight Systems Ar-15 Adjustable Csat Combat Rear Sight Black - Rear Sight for AR-15 - view 2
Buy Now

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

MPNAR-2004-9
ColorBlack
StyleAdjustable

Available Merchants(4)

Prices checked

Price Alert

Get an email if the price drops 10% or more.
Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$50.49
Buy Now
Brownells logo
Brownells
Free shipping over $99
Shipping Speed
In Stock
$51.24
Buy Now
Optics Planet logo
Optics Planet
Free shipping
Shipping Speed
Out of Stock
$51.24
Buy Now
Palmetto State Armory logo
Palmetto State Armory
$9.99 shipping (free over $99)
Shipping Speed
Out of Stock
$56.99
Buy Now

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 September 2026, and today 2 of the 4 retailers we track have it in stock. Prices barely moved in September 2026, holding around $50.49, so there haven't been real sales lately. Buying today, the lowest price is $50.49 at Ammunition Depot, which matches the best price we saw in September.

Trending rear sights →

Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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

The part most often added in each category by the builds that include this one

WMD NIB-X Coated Trigger / Hammer Set - .154"

WMD NIB-X Coated Trigger / Hammer Set - .154"

Trigger$43in 40% of them
Viridian HS1 AR Handstop with Red Laser M-LOK - FDE

Viridian HS1 AR Handstop with Red Laser M-LOK - FDE

Foregripin 40% of them
Viridian X5L-RS Gen 3 Tactical Light and Green Laser Sight for Rifles/Shotguns

Viridian X5L-RS Gen 3 Tactical Light and Green Laser Sight for Rifles/Shotguns

Light$384in 20% of them
Yankee Hill Machine Co Dust Cover 556 NATO for AR Rifles - YHM-111-556

Yankee Hill Machine Co Dust Cover 556 NATO for AR Rifles - YHM-111-556

Dust Cover$16in 60% of them
Zaffiri Precision Blowhole Compensator Fits Glock G43/G43X/G48, Spectrum - Vibrant Color Finish for Enhanced Look - ZP.COMP.43.SP

Zaffiri Precision Blowhole Compensator Fits Glock G43/G43X/G48, Spectrum - Vibrant Color Finish for Enhanced Look - ZP.COMP.43.SP

Muzzle Devicein 60% of them
Zev Technologies Wedge Lock AR-15 Handguard - 7"

Zev Technologies Wedge Lock AR-15 Handguard - 7"

Handguard$215 · out of stockin 60% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

100%
AR-15100%

Caliber

82.2%
5.56 NATO82.2%
.223 Wylde6.7%
300 Blackout4.9%
.308 Win2%
9mm1.6%
Other2.7%

Gas System

60.4%
Mid-Length60.4%
Carbine26.4%
Rifle7.6%
Pistol4.7%
Blowback0.6%
Other0.3%

Builds Featuring This Part

See all builds →

Builds in the community that include the Xs Sight Systems Ar-15 Adjustable Csat Combat Rear Sight Black

BuildPartsTotal
10.5" build build
10.5" build		17$919.97
10.5" 5.56 build
10.5" 5.56		30$2885.65

Review this product

Share your thoughts with other customers

Be the first to review

No reviews yet. Be the first to review this product!