Price: $725.00
This item is in stock

OMEGA GIDEON SHADOW RECEIVER is perfect for building your hk ump kit into a working firearm.


Omega – GS Pistol – 9mm- Receiver

The newly released Omega Gideon Shadow (GS) Receiver. This allows you to build your UMP Kit into a recoil operated, closed bolt, lightweight, durable and easy to maintain semi auto pistol. Each receiver covers 3 of the most popular calibers in 9mm, .40 and .45 respectively. The end user can simply swap the barrel, bolt and magazine and the end user can change the caliber in a matter of minutes. The Omega receiver & your UMP kit yields a superior subgun range performer weighing in at less than 5 lbs. Each Omega GS receiver is made from high impact glass reinforced polymer. A superior pistol platform providing enhanced strength, durability, light and nimble operation. Optional rails will be offered , Made by Omega .

  • Stripped Receiver Only

  • Made from high impact reinforced polymer and steel components

  • End user can swap caliber kits in a matter of minutes in the field

  • Caliber conversion kits are available in 3 calibers 9mm, .40 & .45

  • 9mm & .40 calibers use 30 round & 15 round readily available magazines

  • .45 caliber use 25 round and 15 round readily available magazines

  • Simple to assemble and service

  • Superior materials and ergonomics

  • Accepts folding UMP stocks or pistol braces

  • Accepts either German HK UMP or USA made parts  & accessories

  • Integrated hard mounted point for the addition of the optic rail

  • Integrated tri-rail mounting points for lasers, lights and grips, Rails sold separate

  • Hand stop with ambidextrous sling attachment points

  • Tool less disassembly and ease of cleaning pistol

For your caliber conversion kits or other HK related parts & accessory needs: WWW.HKPARTS.COM

The Omega Gideon Shadow UMP Receiver is perfect for building your HK UMP parts kit into a working semi auto pistol or rifle .The UMP Design  is a straight blow back closed bolt weapon that can easily be converted between 9mm, 40 cal and 45 ACP with just the change of the barrel, bolt and magazine. No other parts of the gun have to be changed or replaced to change the caliber. The pistol has a 7.87" barrel length weighing in at about 5 lbs. total weight, magazine unloaded. The receiver has an integrated rear hinge for a folding stock / arm brace. There is a rear sling attachment point on the left side of the weapon making for convenient  single point sling attachment. With the front finger guard it allows for a two point sling attachment. The Gideon Shadow receiver is made of a high grade glass filled nylon giving it not only high strength but as well as giving it toughness, helping it to resist fractures and brakes if dropped. This platform provides 935 ft/s (45 ACP) with an effective range of 100 m in 9mm and 65 m in 45 ACP. The feeding system is a 30 round magazine for the 9mm and 40 cal and a 25 round magazine for the 45 ACP. The 40 cal and 45 ACP both have a straight box magazine while the 9mm has a curved box magazine. All three magazines lock into the same lower. The barrel is easily changed while being held in with only a barrel pin. The lower is held into place with one rear push  pin. The front of the lower is locked into position with a molded in swing down in the receiver. There is no head spacing required like in the roller lock platform. The lower has a last round hold open device locking the bolt open when the magazine is emptied. With a quick jab of your thumb after inserting a new magazine the bolt closes and primes the chamber with a live round. It is simple and efficient and now wasted movement.There is no gunsmithing necessary for this weapon. There are no special tools needed for assembly or disassembly. With the use of the quick change barrel pin, made by Omega, the entire weapon can be disassembled down to the bare receiver, including the removal of the barrel. Making for ease of cleaning of all internal parts including the barrel. There are brass threaded inserts molded into the receiver allowing for attachment of two front side rails (for lasers and flashlights), a front bottom rail and a top scope rail. Built by Omega.



PLEASE NOTE: If you live in a magazine restricted state we remove the hi cap mag and will be glad to substitute with a 10 round mag IF AVAILABLE. If a 10 round mag is not available we will remove the hi cap magazine from the shipment. We cannot ship prohibited magazines to out of state addresses. There will be no substitutions or discounts offered for removal of mags.

It is your responsibility to be familiar with your current local gun laws BEFORE placing your order. Please feel free to email us with questions you may have.

By placing an order with Atlantic Firearms you are acknowledging and agreeing to all Terms and Conditions outlined in the Terms And Conditions section.

Listing is For Pistol Only, Optics , rails, and flashlight in Pictures (Not Included)


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Atlantic Firearms,llc
10337 Bunting Road
Bishopville, MD 21813
Office: (410) 352-5183
Voice: (410) 352-5183
Fax: (410) 352-3374