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The ultimate magwell for the 1911 pistol.
Adds no length or width to pistol. Largest funnel possible for speed reloads. Allows stuck mag to be stripped from pistol.
One piece design. Requires simple machining, but NO welding, for installation.
Must be an Authorized Installer to order, please inquire via email. Covered by multiple US Patents.
Side Impact Reinforcement TabsTM (SIRTTM)
Hard side impacts are the achilles heel of all other existing magwells which attach to the mainspring housing. Hard side impacts to the magwell can cause the funnel to twist. They can twist to the point where the magwell becomes so out of alignment, that the magazine becomes stuck in the gun, and/or the new magazine cannot be inserted. This is real, it happens, and can spell disaster if the pistol is being deployed in a critical use situation.
The Chen Magwell Gen2 adds two Side Impact Reinforcement Tabs, which effectively eliminate this weakness. The tabs snugly engage against the sides of the pistol frame, and provide a tremendous amount of lateral support to the magwell. Additionally, the pistol’s grips are relieved and further add support the the tabs, and thereby magwell, from the outside. The Chen Magwell Gen2 will simply not twist from any reasonable (and almost any UNreasonable) side impact, to include banging into walls, doors, vehicles and being dropped from heights that would cause serious bodily injury.
Availability and Support
Stan Chen Custom will directly supply and install the Gen2 Magwell on any quality, customer supplied 1911, with impeccable craftsmanship and reasonable turnaround time.
It is also available as a standalone part from our online store, but only to Authorized Installers. Authorized Installers simply agree to some very simple and basic terms with regard to the marketing and distribution of the Chen Magwell Gen2.
Authorized Installers receive a Chen Magwell Gen2 Installation Tool, which is a unique and innovate design in and of itself. It takes all the guesswork out of relocating the MSH pin hole and makes a perfect fit very simple. Its dimensions are precisely matched to the dimensions of the magwell itself. Authorized Installers also get unlimited technical support from Stan himself in ensuring that their installations are a success.
If you are a gunsmith, or manufacturer, interested in the Chen Magwell Gen2, please contact us about becoming an Authorized Installer; you will find us friendly and easy to work with.
Over the years, the original Chen Magwell has earned the reputation among hard core 1911 aficionados as the very finest magwell available. Its functionally elegant design elevates to a new level the shooter’s ability to quickly reload the pistol under stress, all the while remaining compact and tactically sound. There are 2 Generations of Chen Magwells: The Gen1 original weld-on (aka “Chen Magwell Suite”), and the Gen2, which is a one piece design. Both generations of Chen Magwells share all of the following features, which taken together, set them apart from all other 1911 magwells.
1.) Adds no length or width to the pistol- concealability, portability, and the overall handling of the pistol is not compromised. If you can conceal a standard 1911, you will be able to conceal a Chen Magwell’ed 1911 with the exact same ease. Most other magazine funnels protrude past the bottom of the pistol, which adds unnecessary bulk, and requires the use of extended base pads. The full size 1911 pistol is concealable with the right carry gear. However, it is not “small” to begin with, and adding length and bulk via other add-on magwells certainly does not help. Both Chen magwells require the full size 1911 frame to be shortened by .300”. With the addition of the Chen Magwell, the pistol is the same length as it was in its stock state. Also, the Chen Magwells do not extend any wider than stock 1911 grips.
2.) Huge magwell opening for speed and consistency while reloading under stress.
Using sophisticated CAD design and CAM driven machining, the magwell opening is opened up as wide as possible without adding bulk. Additionally, the entry angle was carefully designed and 3D machined to be optimized at every point along the contour of the magwell; that is, it allows for the easiest insertion angle at any given point. Traditional magwells maintain a constant angle at all points along the contour, as they are cut with some form of a chamfer mill or countersink that is only capable of cutting one fixed angle, which does not optimize entry angle.
3.) Allows removal of stuck magazine - by allowing access to the toe of the magazine, so that the magazine can be forcefully extracted in the event it becomes stuck in the pistol. This is accomplished by the combination of two unique features: 1.) The front of the Chen Custom Magwell has a geometry that is considerably reduced compared to traditional weld on magwells. On our magwell, the entry angle constantly changes, and is optimized, at every point along the contour of the front of the funnel. 2.) There is a pronounced access notch in front. The radius of the cut was designed so that the baseplate of a spare magazine can be used for extra leverage in ripping the stuck mag out. Simply cutting this notch in an existing magwell design is not totally satisfactory, as it does not blend with the inside contour that is already cut into the existing magwells.
4.) Machined entirely from heat treated bar stock - for strength, durability, and overall quality of final fit and finish. Heat treated 4140 chrome-moly steel and 416 stainless steel are used.
It is the First and only magwell integrated with the mainspring housing, that adds NO length or width to the original dimension of the pistol. It delivers all the features and functionality of the original Chen Magwell, with significantly simplified installation. Multiple US patents have been filed by Stan Chen Custom/Legacy Custom Products Inc. to protect the related intellectual property.
The Gen2 is machined as one piece, integral with the Mainspring Housing. The entire bottom of the full size pistol frame is shortened by .300”, by machining, to accommodate the magwell . It is attached to the pistol frame via the Mainspring Housing Pin, which is relocated from its original position.
Installation is greatly simplified over the Gen1. No welding is required. This pistol is merely shortened, a new hole is drilled through both the pistol frame and magwell in one setup for a perfect fit, and minor final blending is performed.
The Gen2 Magwell utilizes a compact mainspring, in lieu of a standard 1911 mainspring. It is an industry standard “Officers” or “compact” size mainspring, which has been proven to be completely reliable in independent testing, engineering analysis and over 30 years of use in numerous 1911 pistol models in the industry.
The Chen Magwell Gen2 comes contoured, blended, and dehorned throughout the part which further increases its utility and simplifies installation. The rear curve matches GI pattern grips. A generous roundbutt is machined into the part itself, enhancing shooting and carry comfort.
The proprietary Chen BevelBlock™ is carried over from Gen1 design. This is a block of extra material in a key location at the rear of the magwell, which allows a seamless, gap-free blend with the pistol.
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FEATURES
Elegant form, simplified installation. First and only magwell integrated with the mainspring housing, that adds NO length or width to the original dimension of the pistol.
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The finest no-weld magwell on the planet! 
