Lot 3550

MBAssociates Mark I Model B Gyrojet Pistol

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MBAssociates Mark I Model B Gyrojet Pistol

Estimate: $2,000 - $3,500

Starting Bid: $1,800

(0 Bids)

by Rock Island Auction Company
August 23, 2026 9:00 AM CDT
Live Auction
3600 Harwood Road
Bedford, TX, US 76021

Desirable MBAssociates Mark I Model B Gyrojet Pistol Manufactured c. 1965-1966. Instead of conventional cased ammunition, the Mark I Gyrojet uses 13 mm solid fuel rocket projectiles. Since these rocket projectiles do not require a solid chamber to contain ignition nor extractor equipment to eject a casing, the entire pistol is greatly simplified over conventional handguns and constructed from mostly lightweight materials. Features adjustable blade front and fixed notch rear sights, front-mounted hammer, internal single-stack box magazine with viewing slit in the left side of the grip, "PATENT PENDING" marked on the right of the frame, the two-line MBAssociates address along with the model and caliber designation on the left, and a safety switch on the left rear portion of the frame. Fitted with a pair of smooth walnut grips.

Manufacturer: MBAssociates

Model: Mark I Model B

BBL: 5 inch round

Gauge: 13mm Rocket

Finish: black

Grips: hardwood

Serial NumberB5246

Class: Curio & Relic Handgun

  • Condition: Fine, retaining 75% original black painted finish with flaking, some mild wear, and clear markings. The grips are very fine with a few minor scuffs. Mechanically excellent.

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Bid Increments
From: To: Increments:
$0 $199 $10
$200 $499 $25
$500 $999 $50
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 $199,999 $10,000
$200,000 + $25,000