Magpul MBUS 3 Rear Sight - Stealth Gray
Click to see full view
Magpul
Overview
The Magpul MBUS 3 Rear Sight in Stealth Gray is a folding, fixed rear sight designed for robust performance and ease of use. Constructed from durable polymer, it provides a lightweight yet resilient option that won't weigh down your build. This non-illuminated rear sight is ideal for precision aiming in various lighting conditions and is commonly found in builds featuring a mid-length gas system chambered in 5.56 NATO.
Specifications
August 2026 on GunPartPicker
Magpul MBUS 3 Rear Sight - Stealth Gray ranked #11 of the 26 rear sights builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it is the ninth most added rear sight on the site. Builds with this rear sight are mostly chambered in 5.56 NATO (67%, then 300 Blackout 33%), nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $59.95, so there haven't been real sales lately. Buying today, the lowest price is $59.95 at Magpul, which matches the best price we saw in August.
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
The part most often added in each category by the 28 builds that include this one
Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11
Magpul MBUS 3 Front Sight - Stealth Gray
PSA AR-15 Upper 5.56 16" Mid-Length Nitride 13.5" M-LOK - 5165448513
EOTECH XPS2 Holographic Sight, Tan - XPS2-0TAN
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Builds Featuring This Part
See all 2 →Builds in the community that include the Magpul Mbus 3 Rear Sight - Stealth Gray
| Build | Parts | Total |
|---|---|---|
 | 31 | $2791.34 |
 | 17 | $1683.23 |
No reviews yet. Be the first to review this product!