Skip to main content
Rock Island Auction Company
AuctionsConsignmentLatestFAQAbout us
Log InCreate Account
Rock Island Auction CompanyRock Island Auction Company
Contact us
1-309-797-15001-800-238-8022[email protected]
Locations
Bedford, TX
3600 Harwood RoadBedford, Texas 76021, USA
Rock Island, IL
7819 42nd Street WestRock Island, Illinois 61201, USA
Hours
Monday - Friday8:00 a.m. - 5:00 p.m.
Navigation
AuctionsConsignmentLatestFAQAbout usAccount
More Info
Terms & ConditionsPrivacy PolicyJob postings & CareersOrder a catalogContact
Social media
© 2025 Rock Island Auction Company. RIAC believes that this website is accessible to the widest possible audience pursuant to the guidelines of the Americans with Disability Act. Click here for more information.
Healthcare Transparency in Coverage.
Disconnected
Unable to connect to live update server, attempting reconnection. If this persists, please try refreshing your browser.
Disconnected state indicated by at top of page. If you cannot see this icon, you are connected.
Rock Island Auction Company
Hello.
Please Log In, or .

Home
Auctions
Consignment
Latest
FAQ
About us

  • /Auctions...
  • /Catalog...
  • /Lot 548

Lot 548:Experimental Underwood M1 Carbine Serial "E101" with Knife Stock

December 3rd, 2021|Rock Island, IL
  • /Auctions...
  • /Catalog...
  • /Lot 548

Lot 548:Experimental Underwood M1 Carbine Serial "E101" with Knife Stock

December 3rd, 2021|Rock Island, IL
Price Realized:
Login to viewLogin to view
Price obfuscated
Estimated Price$3,000 - $4,500
Log In to use Wishlists
Share

Rare Experimental Underwood M1 Carbine Serial Number "E101" with Sliding Prototype Buttstock and Concealed Flip-Up Blade

This is a unique example of an experimental/prototype M1 Carbine that was manufactured by the Underwood Elliott-Fisher Company. This is possibly the only one of its kind ever manufactured. It features a "sliding" recoil absorbing type buttstock design, although it appears to be incomplete and is missing the actual buttstock itself. There is a large cheek piece located on the left of the receiver that has a built in spring loaded system in which the missing buttstock section would use a recoil absorber (functions similar to lot 545 in this same auction) that also acts as a shield to conceal a flip-up blade that can be folded out to face rearwards and function as a bayonet. Throughout World War II, several of the Defense Companies produced numerous experimental type carbines based on the wartime needs of the U.S. Military. They usually set aside/reserved a specific block of serial numbers usually with a letter prefix of an X, E, or both, as preproduction examples or test models. Some concepts were acted on while others never left the prototype phase and did not make it to production. This example is serial numbered "E101" on the heel of the receiver, denoting it as an experimental carbine. These carbines were usually assembled from military contract parts and used both early and late production parts, with some bearing proofs while others were unproofed. It is estimated that approximately 50-100 of these various experimental carbines were manufactured by several companies, with the majority of the known examples manufactured by the Inland Division and Winchester Companies. The style of machining and parts appear to be of original World War II era and original to the carbine. This carbine has the standard "U.S. CARBINE/CAL .30 M1" markings on the front receiver ring with the rear area stamped "UNDERWOOD/E101", and the barrel is marked "UNDERWOOD/12-42/Flaming Ordnance Bomb". It is fitted with an early type II barrel band without sling swivel, blued type I flat bolt, early two-position flip rear sight marked "S" on the left side (hard to see), early all milled trigger housing with a push button safety, low wood stock, two-rivet handguard stamped with an "M" on the underside. The magazine is blued and marked "O SG" on the spine. Certainly a very interesting early carbine. Provenance: The George Moller Collection

ConditionFine, incomplete with absent buttstock section, retains 60% original parkerized finish with some scattered patches of light to moderate corrosion mostly concentrated on the flip-up blade, and some patches of mild pitting at the muzzle. Stock is good with some scratches and dents, and the recoiling cheek piece is cracked/re-glued in various places. Mechanically fine, although the recoiling cheek piece is fragile and the buttstock is absent as noted above.
Details
ManufacturerUnderwood
ModelM1 Carbine
TypeRifle
Serial number
ClassCurio & Relic Long Gun
Caliber / Gauge30 Carbine
Barrel18 inch round
Finishparkerized
Stockwalnut

Item LocationRock Island, IL
Views3513
Catalog page318
Find MoreRelated Items
Lot 125U.S. Underwood M1 Carbine with Bayonet
View Lot
Lot 3390World War II U.S. Underwood M1 Semi-Automatic Carbine
View Lot
Lot 117U.S. Winchester M1 Carbine with Bipod
View Lot
Lot 521U.S. Winchester M1 Carbine
View Lot
Show More