RPB Industries / MAC Ingram M11 .380acp Transferable Submachine Gun w/ a Lage MAX11A1/15 5.56mm Conversion Upper


Status: In Stock / Please Call to Purchase

This Chester County Armory sale listing is for an RPB Industries / Military Armament Corp. Ingram M11 .380acp (a.k.a., MAC-11) fully transferable submachine gun being offered as package deal with a Lage Manufacturing 5.56mm MAX11A1/15 conversion upper included. This complete, multi-caliber kit is an excellent way to get both a transferable submachine gun and a select-fire assault rifle in one easy, fully transferable weapon package.

This package starts with a like-new condition, fully transferable RPB Industries M11 .380acp submachine gun. This weapon was one of the models built and registered by RPB Industries using an original Military Armament Corp. produced M11 receiver. Commonly referred to as and RPB “double-stamp” model as both manufacturers’ information is displayed on the receiver,  this weapon has been recently inspected and upgraded by famed MAC guru Sam Schneider of Practical Solutions through the installation of a new factory .380acp barrel and bolt assembly, complete refinish, and proper fitting of the Lage MAX11A1/15 5.56mm upper. This model has been set up to by Practical Solutions to accept the more commonly found Zytel MAC magazines.

This transferable machine gun will also come with a brand new Lage Manufacturing MAX 11/15 5.56mm NATO conversion upper fitted properly so that switching between calibers only requires the removal of the front pin, physical switch of the uppers, and reinstallation of the front pin.  This is the latest version of the Lage full auto caliber conversion and features a factory installed Odin Works adjustable gas block for suppressor use. The Lage upper kit is in factory new condition (having only been fitted and test fired) and will come with its original Lage manual and accessories.  We have also included a removable Lage M11/AR-15 stock assembly with a Magpul CTR telescoping stock.  The entire package is then rounded off with a 30rd Magpul windowed PMAG.

This weapon is in fantastic, better-than-new mechanical and cosmetic condition, and runs flawlessly with both uppers in each caliber configuration. Mechanically, this transferable machine gun setup is in like new condition. The bolt assembly shows no wear and the fire control internals note only minor surface marks. Along with the bolt assembly, the .380acp barrel is in brand new condition and has only been test fired by Practical Solutions. Cosmetically this setup is also in excellent, like new condition, with almost no marks noted in the parkerized finish (see photos). The metalwork is in superb condition, and does not display any dings, dents, cracks, etc. . In addition to the Lage accessories, purchase of this model will come with its original complete .380acp upper receiver with full auto bolt group, telescoping wire stock, and two original 32rd Zytel magazines.

This complete, multi-caliber kit is an excellent way to get both a transferable submachine gun and a select-fire assault rifle in one easy, fully transferable package. This RPB Industries M11 is currently on an eForm-capable Form 3 for quick an easy transfer.

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    This Chester County Armory sale listing is for a fully transferable RPB Industries / MAC Ingram M11 ..380acp transferable submachine gun with a Lage Manufacturing MAX11A1/15 5,56mm conversion kit included.  This model is currently in-stock, in our possession,  and available for purchase on a Form 3. Please call us at 610-235-6155 to purchase or for additional information on this item.




    RPB Industries / MAC


    Ingram M11




    Blowback, Open Bolt

    Barrel Length



    3.5 lbs