Sightmark Ultra Shot M-Spec FMS Reflex Sight

Sightmark Ultra Shot M-Spec FMS Reflex Sight - Optic - view 1
Sightmark Ultra Shot M-Spec FMS Reflex Sight - Optic - view 2
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Sightmark

Overview

The Sightmark Ultra Shot M-Spec FMS Reflex Sight is a robust red dot optic designed for quick target acquisition and durability, crafted from 6061-T6 aluminum to withstand the rigors of field use. With its Picatinny mounting interface, this sight easily attaches to a variety of platforms, allowing for seamless integration into your build. This optic is often found on mid-length gas system rifles chambered in 5.56 NATO, making it a solid choice for versatile tactical applications.

Specifications

MPNSM26035
Mounting InterfacePicatinny
Optic TypeRed Dot
Reticle ColorRed
Material6061-T6 Aluminum

Available Merchants(6)

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Classic Firearms logo
Classic Firearms
Shipping varies
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In Stock
$216
MidwayUSA logo
MidwayUSA
Free shipping
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In Stock
$240
BattleHawk Armory logo
BattleHawk Armory
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In Stock
$240
KY Gun Company logo
KY Gun Company
Flat rate shipping
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In Stock
$240
Palmetto State Armory logo
Palmetto State Armory
Free shipping
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$240
Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
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Out of Stock
$240

Build history on GunPartPicker

Builders have been adding the Sightmark Ultra Shot M-Spec FMS Reflex Sight to their builds on GunPartPicker since February 2026. All time, it ranks #177 of the 482 optics builders have added. Builds with this optic are mostly chambered in 5.56 NATO (75%, then 7.62x39mm 25%), mostly on mid-length gas (75%, then carbine-length 25%), and mostly AR-15 (80%, then AR-10 20%).

Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 6 retailers we track have it in stock. Prices barely moved in August 2026, holding around $239.97, so there haven't been real sales lately. Buying today, the lowest price is $215.98 at Classic Firearms, which matches the best price we saw in August.

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We ranked every optic by how often it shows up in real builds on GunPartPicker.

Read the guide: AR-15 Red Dot & Optic Guide →

Frequently Built With

The part most often added in each category by the 13 builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

80%
AR-1580%
AR-1020%

Caliber

75%
5.56 NATO75%
7.62x39mm25%

Gas System

75%
Mid-Length75%
Carbine25%

Builds Featuring This Part

See all 2 →

Builds in the community that include the Sightmark Ultra Shot M-Spec FMS Reflex Sight

BuildPartsTotal
16" Yankee Hill Machine carbine build
16" Yankee Hill Machine carbine
24$1491.87
wilson combat 16" 5.56 build
wilson combat 16" 5.56
22$1614.07

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