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Grey Ghost Upper Receiver for the M11/9 SMG

Introducing the production version of the Grey Ghost Upper Receiver for the M11/9 SMG designed by Mike McManus. This upper receiver is the perfect host for the Vegas SMG slow fire CF-W Bolt or stock bolt.  It is completely made of steel with full length Picatinny Rail on top, an Ace Style grip out front, a flash hider with barrel threaded to 1/2 x 28 TPI, “shark fin” non-reciprocating charging handle, and built in gas deflector.  There is currently a wait list for this upper and as of the time of this post, we are shipping the first 10 out to customers.  If you would like to be added to the wait list, please contact us at:

Here are some pictures of customer customizations:

This one has a round and more compact charging handle and a customer supplied 3-lug double threaded barrel:


This one has a 3″ piece of picatinny rail welded onto the ejection port side of the upper receiver to accommodate additional accessories.  (The tape is on the end of the barrel to protect the threads during shipping because the customer did not want the flash hider as he will be shooting suppressed):

These two pictures below show the Uzi Style Folding Stock tucking under the fore grip extension.  If you watch the video below you will see toward the end of the video the folding stock with the stock arm welded to the other side of the butt plate to accommodate long uppers. 
Last but not least, here is a video showing the production upper as well as assembly instructions:

If you have any questions or comments, please be sure to let us know!

Happy shooting…


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Browse New Products On Our Site

We’ve been working on adding new products to our site so that we might offer our customers a bigger selection of MAC related items and tools.  Below is a list of items added recently:

Uzi magazines – Promag 22 rnd 45 acp and Parkerized Surplus 32 rnd .9mm mags

M11/9 or M11A1/380 magazines – Zmag 50 rnd .9mm or Zmag 30 rnd .9mm mags

Taps and Dies – Selection of Taps and Dies for re-threading uppers and barrels and/or cleaning up threads

Armorer’s Tool Set – This is a selection of items we put together to assist you when working on your MAC

Assault Grip Extension – This is a quick and inexpensive way to add length and a fore grip to the front of your MAC

We love to hear from you!  Don’t hesitate to contact us.

Happy Shooting…

Key words:  MAC Mac-10, M10, M10/9, M10/45, Cobray®, Ingram, Military Armament Corp., Jersey Arms Works, JAWS, Hatton Industries, Marshall Arms, MPA, Masterpiece Arms, M11, MAC-11, M11/9, M11A1, M11-380, Machine Gun, Guns, SMG, Repair, Practical Solutions, SWD, RPB, Lage, UZI, Grease gun, Zytel, Shockwave, Leinad

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New – Free or $4.99 Flat Rate Shipping

We just hate paying high shipping fees.  Especially when we feel like it’s unreasonable.  For example, just a couple of days ago, we bought $14 worth of fittings for the drip irrigation we are putting into our high tunnel (Because in addition to being machine-gunners, we are also wanna-be farmers) and the shipping was $13.  So almost half of the order was for shipping!  Now these pieces might take up some space in a box, but they are plastic and so don’t weigh very much.  I’m sure that the actual shipping the company pays to send us our box will be less then what we were charged.  

That’s it!  This was the straw that broke the camel’s back and we decided to change our own shipping pricing.

From now on, most of our items will qualify for free shipping via USPS First Class mail.  These items are the smaller items that will fit into a padded envelope.  We don’t want you to buy a $3.99 spring and pay $6.00 shipping – that’s crazy!  

All other items – those that will mail in a box and will have some weight to them will be shipped with a $4.99 flat rate shipping charge via USPS Priority Mail.

If for any reason you would like your items that qualify for free shipping to ship via Priority Mail as opposed to First Class, we would be happy to accommodate your needs, but we will charge the $4.99 flat rate shipping fee and please call in your order because our website is not smart enough to make this change.

Our pricing structure on all firearm shipping has not changed.  We will continue to charge the actual shipping fees we pay the common carriers.

Thank you so much for your continued business!

Happy Shooting…


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Now Buying Semi-Auto and/or Full-Auto Broken MACs, Registered Receivers, part sets, new or like new parts, magazines, and/or accessories for the MAC series semi-auto or full-auto machine guns.

Do you have a MAC open bolt semi-auto gun or full-auto machine gun that you want to sell?  Do you have one that is broken and just wasting space in the safe?  Did someone pass one down to you and you would rather have the money than the gun?  Do you have a registered receiver that was never built into a working gun?  Maybe you feel like your gun has been damaged beyond repair and you’d have just thrown it away years ago, but you just can’t bring yourself to do it.  Do you have part sets rusting away in your basement?  Do you have cases of grease gun, Zytel, Uzi, or Sten magazines that you don’t need?  Did you sell off your MAC and keep the accessories, but now you really don’t want them?

If any of the scenarios above sound like you then contact us.  We are now buying the guns that you don’t want.  Tell us your asking price and we will be happy to make you a reasonable offer and we will pay you in full as soon as we complete the transfer paperwork. 

We will only buy legal guns.  Please do not contact us if you have a full-auto gun that does not have paperwork.  We are not interested in contraband.

Please call or email us with what you have at:  410-404-0320 or

Happy Shooting

Key words:  MAC Mac-10, M10, M10/9, M10/45, Cobray®, Ingram, Military Armament Corp., Jersey Arms Works, JAWS, Hatton Industries, Marshall Arms, MPA, Masterpiece Arms, M11, MAC-11, M11/9, M11A1, M11-380, Machine Gun, SMG, Repair, Practical Solutions, SWD, RPB, Lage, UZI, Grease gun, Zytel

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Will a Semi-Auto Safety Slide Function in your Full-Auto MAC Machine Gun?

Here is a common problem we get from customers:  “My MAC Machine Gun will only run with irregular burst fire regardless of the position of the selector lever.”  Often times when our customers have this problem, prior to coming to us for help they will throw parts at the problem such as a new bolt, new springs, new extractor, and the list will sometimes go on and on.  Then after researching the issue further the customer will discover that the Safety Slide is what is causing the problem.  The cheapest and most prevalent source for a new safety slide is an aluminum safety slide designed for the Semi-Auto MACs.  See picture below:

So this brings us to the title question.  Will a Semi-Auto Safety Slide function in your Full-Auto MAC Machine Gun?  This a good question and the short answer is yes but not for long.  OK, so that’s not a good enough answer.  Here’s the long answer and explanation.  

The original style safety slide was made of cast aluminum.  Now-a-days, most of the safety slides on the market are also cast aluminum.  Aluminum is a soft metal and when under heavy stress it will wear out pretty quickly.  In the case of an aluminum safety slide, when in use, it is constantly being compressed by the sear which keeps the sear from dropping too far and thus allowing the machine gun to shoot full auto without the trip getting in the way of the disconnector.  However, with each round, that steel sear wears away at the aluminum safety slide and after a certain point, the safety slide is worn away too far and the resulting malfunction is irregular burst fire. 

Sometimes the customer will purchase a safety slide designed for a semi-auto MAC because these are the cheapest and easiest to come by.  This option will work in the short run.  Go back to the picture listed above; look at the semi-auto safety slide furthest to the right.  See where the arrow is pointing to the worn area?  The semi-auto safety slide comes new with that cut out area.   So, not only is the area that holds the trip in place cut away when it’s new, but it’s also aluminum so it’s soft and will wear quickly. 

Now look at that same area on the full-auto safety slide just to the left.  As you can see, it’s not cut out in any way.  This allows for more material to hold the sear from dropping and thus allowing for full-auto fire.  This part will last much longer than the semi-auto safety because it will take more time for the sear to wear away at the aluminum.  This is what we call an actual repair, not just a temporary fix.

Lastly, look at the two safeties on the left.  These are designed and manufactured by us, Practical Solutions, as an improvement to the original design.  Not only do our safety slides have even more surface area to stop the sear travel than the original, but they are also made of steel.  Steel on steel will last much much longer than steel on aluminum. 

If you are having issues like these with your MAC, you can buy one of our safety slides or if you have questions, please call us at:  410-404-0320 or email us at:

Happy Shooting!

Key words:  MAC Mac-10, M10, M10/9, M10/45, Cobray®, Ingram, Military Armament Corp., Jersey Arms Works, JAWS, Hatton Industries, Marshall Arms, MPA, Masterpiece Arms, M11, MAC-11, M11/9, M11A1, M11-380, Machine Gun, SMG, Repair, Practical Solutions, SWD, RPB, Lage, Uzi, Grease gun, Zytel

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M10/45 Machine Gun For Sale

M10 right

Left side

This is a new Marshall Armaments M10/45 Full Auto Machine Gun.  We built this from a registered frame into a fully functional and reinforced gun that uses all the latest parts.  This will come with our Uzi style folding stock, paddle magazine release, and non reciprocating side cocking upper receiver.  The front sight is fully adjustable and the upper receiver also has a full length Picatinny Rail.  There are reinforced welds on feed ramp, and double welds at sight plate.  This is the last of this kind that we have for sale.  If you are interested in this beauty, please contact us for details and for pricing.

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Only 1 M10/45 left for sale.

There’s only one left.  Don’t be left out…

We had 5 stripped receivers that we have built into complete guns and have added some of our most popular accessories and gone over each one with a careful eye to make sure all holes, welds, working parts are reinforced and in perfect working order.  Now, we only have one left.  Contact us now to discuss the details and to secure it as yours before it’s gone.


  Don’t become a part of the Holiday Madness!


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New M10/45 Machine Guns For Sale

imagesFor those of you who are wondering just what you are going to buy with your Income Tax Refund, we have an answer!  Just in time for tax refund season, we have new M10/45 machine guns for sale.  Here are the details.  These are in limited supply and since they already have reinforced welds and some of our best selling accessories, we imagine they’ll sell fast.

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As our way of saying Happy Holidays and thanks to our customers, we are offing free standard shipping on all orders over $50.00. But hurry, this offer will expire on 12/31/14.

Our online store is now populated with most of our inventory and the shopping cart and credit card processing modules are working correctly. So go ahead and add our items to your Christmas lists and place your orders.

Lastly, if you are looking for something that isn’t listed on our site or is listed as out of stock. Send us an email and we’ll see if we can help you in any way.

Fine Print – Free shipping is standard USPS priority mail. This offer applies to online purchases only. It does not include the shipping of guns. We will make every effort to ship ordered items as quickly as possible and most will be shipped within 24 hours.