M-Squared Aircraft

msquaredaircraft.com ↗

USA Part 103 Buyer’s GuideM-Squared Aircraft

Fixed wing B$12k–$20k St. Elmo, AL, USA

Open tube and fabric, out of the Quicksilver tradition, with five hours of instruction in the price. Paul Mather’s Breese is the simple, mechanic-friendly end of Part 103: nothing to hide behind, nothing you cannot reach with a wrench, and an 18 mph stall.

5HOURS OF INSTRUCTION, INCLUDED

In the $14,995 Breese XL price. Part 103 requires no instruction at all, which is exactly why this matters. Almost nobody else in the category puts a instructor in the box with the aeroplane.

Published today: Breese XL $14,995, kit plus 5 hours of instruction.

Build M-Squared

What it can and cannot do

The capability table.

NosewheelYesStandard
Open cockpitYesStandard
Straight floatsOptionalPublished option
Amphibious floatsOptionalModel-dependent
SkisOptionalModel-dependent
Ballistic parachuteOptionalModel-dependent
TailwheelNo
Folding wingsNo
Enclosed cockpitNo

Yes published as standard · Optional factory option or variant · No not available

The lineup

Two Part 103 Breeses.

Breese XL $14,995
26 ft span 42 mph cruise 18 mph stall 28 HP Hirth F33

Strut-braced, open cockpit, nosewheel. The price is the kit plus five hours of instruction. An 18 mph stall is about as forgiving as this category gets.

Breese SS Kit pricing on site

The other single-seat Part 103 Breese. Ask Paul how it differs from the XL before you order.

The Breese 2, the Sprint, and the Ultra-X are not Part 103

The Breese 2 SS and DS are two-place S-LSA. The Ultra-X is aerobatic. Same family name, different aircraft, different rules. If it seats two, it is not an ultralight.

Who it suits

  • Pilots who want the classic open tube-and-fabric ultralight, wind and all.
  • Buyers who want an aircraft they can maintain themselves with ordinary tools.
  • First-time flyers who want instruction bundled, which is rare in a category that requires none.
  • Anyone who wants an 18 mph stall on their side while they learn.

What you give up

  • Open cockpit. Your season and your climate decide how much that costs you.
  • No folding wings, so storage and trailering are your problem to solve.
  • M-Squared shares personnel and contact addresses with Aeromarine-LSA, so confirm which company you are buying from.
  • Only the Breese singles are Part 103.

Verified contact

How to reach them directly.

M-Squared Aircraft Verified Jul 2026
OwnerPaul Mather
Phone(251) 422-7350
AddressSt. Elmo, AL
Also onThe Aeromarine-LSA contact page

The same phone number appears on the Aeromarine-LSA build centre listing. Shared personnel, separate companies.

Part 103 compliance is yours

An aircraft marketed as Part 103 capable can exceed the 254 lb powered empty-weight limit once engines, instruments, and options are added. Floats and skis move that number. You weigh the finished vehicle and you confirm compliance with 14 CFR 103 before you fly it. See the Part 103 disclaimer.

Are you M-Squared Aircraft? This listing is free and independent. To correct anything, update pricing, or add a model, use the contact page. The free listing is not conditional on any paid engagement.

Your buyer just configured an airplane. Could they do that on your site?

Built by Christopher Eller. If you build Part 103 aircraft and want this on your own domain, with the leads landing in your inbox instead of ours, that is the whole job and I do all of it.

01

Found by AI and by buyers

Structured so ChatGPT, Perplexity, Gemini, and Google AI Overviews read what you sell and name you instead of skipping past.

02

Configurators that close

Live price, live weight, one-click quote request. The buyer decides on your site, not in a two-week email chain.

03

Deposits online, today

Secure card payments for deposits, kits, parts, and training. Stop chasing checks.

04

Subscription payments during the build

Split a big kit into monthly payments. The buyer commits, and the cash arrives while you build instead of after.

05

The list is yours

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06

Everything underneath

Domain management, speed, security, AI readiness. One number to call when anything breaks.

Talk to Christopher ↗

Your 103Flyer listing is free and always will be. It is not conditional on hiring me.