The Mk11 Mod 0, like its big brother rifle, the subsequent M110, was a unique weapon fielded largely for the special operations snipers in the Afghanistan and Iraq theaters of war in the early 2000's. It was the answer to a gas operated precision rifle that would reach beyond the 5.56mm Mk12 and serve dual service as a DMR weapon where the longer range M40 and Mk13 dedicated sniper rifles required specialized crews. For the military correct clone community, the Mk11 has always been one of those rifles that enthusiasts aspire to purchase, build, and collect. The suppressor has been one the last parts that has been just too hard to find, or commanded a price tag beyond the budget of many clone enthusiasts.
Knight's Armament discontinued the Mk11 silencer several years ago. This left a hole in the market and caused dismay to many a clone collector and shooter. The Mk11/M110 series use very specific mounting set ups and were only issued with one model of silencer. Griffin Armament has filled the vacuum left by KAC with this particular "near clone" Mk11 suppressor.
The Griffin Armament MGL-11 pays homage to the form factor and lines of the original KAC but with the advantages of new technology. Using Griffin's G2 PSR ECO-FLOW baffle system along with up to date materials and manufacturing technology, the MGL-11 comes in more than half a pound lighter than the KAC original. Laser welded 17-4 stainless steel provides the durability the weapon system pedigree demands. A flash hider cap helps performance for those worried about visual signature. And solving an issue noted with original silencers where KAC units would sometimes come unlatched, Griffin has added a secondary locking mechanism to the gate mount system while maintaining compatibility with two-pin gas blocks.
Note: This suppressor will only fit an Mk11 profiled barrel with no flash hider and an SR-25 or M110 with a 6-O'clock timing pin designed to accept an Mk11 suppressor. This is a very specific military style suppressor for a very specific barrel and gas block setup. See compatibility section below for details. This will not fit just any AR-10 or even any SR-25 rifle or barrel.
Griffin took the design of the PRS-7 which had reinvented the OTB (over the barrel) design and refined it to leak less gas, and then added additional OTB space to create what some might call a very long PRS-7. Except that the gate latch needed to connect with an Mk11 gas block was needed. And, the internals needed to be measured out in rather exacting measurements. The Mk11 Mod 0 has no flash hider.
Reflex Suppressors, or Over the Barrel Suppressors have been manufactured for quite some time, but recently haven’t been the focus by mainstream manufacturers. Griffin first made over the barrel suppressors over ten years ago with the introduction of the RSTA and SPR models. Meant to diminish blow back, provide superlative accuracy, excellent POI shift characteristics, and add minimal system length, these suppressors were highly desirable among suppressor aficionados. Griffin then reintroduced next generation over the barrel suppressors with the DUAL-LOK PSR suppressor series.
Unlike an integral suppressor, which typically has drilled holes in the barrel of the host firearm and the tube extending over the barrel; the over the barrel suppressor has an attachment system which goes rearward of the barrel’s muzzle by several inches thus making a shorter overall length suppressed firearm. Despite the long length of the suppressor itself, this allows for a ~9 inch suppressor to be a smaller overall added length to the barrel. Popular Vietnam War era suppressors were all over the barrel varieties.
Fast forward to a more modern time, the company OPS Inc., started providing these style suppressors in the early 1990’s and later became prolific integrating its suppressors with the SOF communities Mk12 Mod 0 and Mod 1 sniper rifles in 5.56 NATO. Around the same time Knight's Armament also started engineering similar products, most notably for the Mk11 and then for the M110 sniper rifles. In the early 2000’s, AAC, and Surefire started manufacturing OTB suppressors as well for military sale. These suppressors targeted the sniper community.
Semi-automatic and bolt action rifles in the sniper community used over the barrel suppressors almost exclusively for some time in both the Army and Marines until about 2010. This was most likely due to accuracy being more consistent in harsh field use with over the barrel suppressors vs muzzle mounted variants. Today, the OTB suppressors are still in use by the sniper communities but not very popular by commercial recreational users due to their more limited versatility.
Griffin introduced the RSTA and SPR in 2010. These suppressors were well liked by the small community of end users who purchased them due to their single piece muzzle devices which were much easier to install vs multi piece mounting systems from companies like OPS Inc. Griffin refocused engineering efforts towards more mainstream muzzle mounted products around 2016 and chose to discontinue those models, until introducing the PSR Gate LOK, and at the same time, Allen Engineering saw an uptick in the clone market with their AEM suppressors, now, not just for Mk12 rifles, but also for Gordon carbines.
With the growth in the clone market, we at Charlie's like to stay on top of products for the military rifle enthusiast, and the Mk11 Mod 0 has been regarded as one of the holy grails of clone collecting and building. A true Mk11 Mod 0 is incredibly hard to source and build, and thus the price of a Mk11 rifle is very high, and so are its components. Using a Griffin MGL-11 suppressor in black is a good alternative to finding the actual KAC silencer at probably 5X the price. We put this suppressor in the category of "near clone," which is where many of our customers look to be.
It is important to note that this suppressor is not made for just any AR-10 style rifle. In fact, the specs are so specific that only a few rifles and barrels will work for this suppressor. Even though the KAC SR-25 was the base platform for the original Mk11, not any SR-25 will work. This suppressor is made solely for the SR-25 Mk11 Mod 0 rifle. That is not to say that you cannot engineer or contract or purchase a Mk11 clone rifle that will work, but barrel specs are important.
Charlie's has done testing on a variety of upper receivers, barrels, gas blocks, gas tubes, BCGs, and so forth, and found very few that make the cut to be compatible with the Knight's Armament Mk11 rifle. We may not have tried them all, but we have tried a great many. This is one reason why our offering of M110 and Mk11 rifles and components has come out so slowly over the years. The R&D and the sourcing of materials and shops to perform specific work is painstakingly difficult. We are happy to get behind Austin and his work at Griffin. Austin is an experienced operator and a clone enthusiast, and clearly a clever business man. But, at the price he is offering this suppressor, trust us, Griffin has invested a lot more to get this suppressor to market, and Charlie's is happy to be a major sponsor of this investment.
A Mk11 Mod 0 barrel and gas block has a gas port that is in a unique location, quite different from other AR-10 style barrels and gas blocks. While this is not essential to your barrel and gas block purchase for the suppressor to fit, it is imperative that the barrel and gas block be made to fit each other. For example, the Knight's Armament and the Potomac Armory barrels and gas blocks are interchangeable.
Knight's made the barrel and upper receiver parts of the Mk11 way more complex, or at least non-standard, which has resulted in many a clone enthusiast thinking that he or she had found a substitute for a Knight's part, only to find that something did not work or did not fit. So, while your selection of barrel and gas block might be okay to buy from the dude on Gunbroker, or a small workshop make clone parts, but the truth is when you try to put all the parts together. Another gunsmith might make a barrel and gas block that fit together, but might not be interchangeable with a KAC standard design. It might work perfectly well together, and that might be all you need, so long as you are not trying to marry a part with a KAC compatible part. It gets confusing very quickly, for sure.
The Mk11 Mod 0 barrel is unique, and as different from most every AR-10 style rifle that you can find, so take your time and learn. Unlike the M110, the Mk11 Mod 0 did not utilize a flash suppressor. Next, the gas port is in a different position than most, you will need a specifically designed gas block. And, the outer diameter of the barrel must be 0.75". Finally, the distance between the end of the barrel and the gate latch on the gas block needs to be a very specific distance for all this to come together. There are more nuances to the Mk11 Mod 0 barrel, but these are the important points for the suppressor to attach.
One additional nuance to the Mk11 barrel compatibility is that the Mk13 bolt action sniper rifles used the Mk11 suppressor, and you will find some Mk13 Mod5 rifles with a built-in gate-latch into the sides of the barrel to accept the Mk11 and thus this MGL-11 suppressor.
Note: While the Mk11 and M110 share the same heritage, the barrels are not interchangeable for use with the Mk11 suppressor.
Next, you will need a specific gas block, which has a nose that pushes forward to accept the gate latch of either a KAC or a Griffin M110 suppressor. While the M110 gas block is clone correct, there was a later Knight's version of the gas block used in the SR-25 ECC, EC, and EMC models and the M110 K models, all built in 2012 and 2013 (+/-). This is where the dimpled barrel became famous, but not on the original M110.
An Mk11 barrel and gas block has a gas port that is in a unique location, quite different from other AR-10 style barrels and gas blocks. While this is not essential to your barrel and gas block purchase for the suppressor to fit, it is imperative that the barrel and gas block be made to fit each other. For example, the Knight's Armament and the Potomac Armory barrels and gas blocks are interchangeable. Another gunsmith might make a barrel and gas block that fit together, but might not be interchangeable with a KAC standard design. Knight's made the barrel and upper receiver parts of the M110 way more complex, or at least non-standard, which has resulted in many a clone enthusiast thinking that he or she had found a substitute for a Knight's part, only to find that something did not work or did not fit. So, while your selection of barrel and gas block might be okay to buy from the dude on Gunbroker, or a small workshop make clone parts, but the truth is when you try to put all the parts together.
Note: While the Mk11 and M110 gas blocks have the same general look, they are different. The original Mk11 gas block will not work without some retro machine work with this suppressor. The M110 suppressor is backward compatible with both suppressors, but the pure old school Mk11 is not forward compatible with the M110 suppressor.
Note: The Mk11 does not have a flash hider and the M110 does.
Note: "Knight's Armament" is a federally registered trademark and is of many trademarks owned by Knight's Armament Co. Griffin Armament and Charlies Custom Clones are an independent manufacturer and dealer, respectively which are not affiliated with or endorsed by Knight's Armament. Reference to Knight's Armament and KAC are for explanation and compatibility for the end customer.
Buying and shipping through Charlie’s is easy, but there is some information you need to know. This item must ship to FFL holder. No civilian exceptions.
1) Check your state laws to make sure the federally regulated item you want to purchase is legal in your state.
2) Find your FFL… Have your dealer send us a copy of their FFL and SOT to Charlie’s (Make them earn their fee!). Not every FFL is a SOT or Class 2 / Class 3 dealer.
3) Be patient! You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.
That’s it! We try to make this process as simple as possible for our customers. Please click the “Buying a Firearm” tab at the top of this page for more information.
THIS IS A SERIALIZED ITEM. It must ship to a Federal Firearms License holder. No civilian exceptions.
Buying and shipping through Charlie’s is easy, but there is some information you need to know. Only a federally licensed firearms dealer may receive a firearm or federally regulated serialized item (like a receiver or suppressor). We cannot ship these items directly to you. Please follow these steps to process your transaction:
1) Check your state laws to make sure the federally regulated item you want to purchase is legal in your state. Your FFL dealer should be able to give you all of the necessary information regarding your state specific laws. But, if we ship to your FFL, and there is a legal issue, we cannot accept a return. So please make sure that you know and follow your local and state laws.
2) A quick google search will show you what Federal Firearms Licensed (FFL) dealers are in your area. When you are ready to purchase, contact the FFL dealer you would like to use and get their shipping address. During the check-out, put YOUR address in the “billing” section and the FFL DEALER’S address in the “shipping” section. If you don’t know your FFLs address, that’s okay. You can send the information later.
3) After check out, make sure to contact your FFL dealer to ensure they will receive your shipment for you (most do this for a small fee, but you should always double check).
4) Have your dealer send us a copy of their FFL to FFL@CharliesCustomClones.com. Charlie’s does not reach to your FFL (MAKE THEM EARN THEIR FEE!!!)
5) Be patient! In order to ensure we remain compliant with all federal laws, our compliance department is kept separate from our sales and operations team. Please allow a few days for our compliance officer to verify all of your dealer’s documents and ensure all federal laws are being observed. You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.
That’s it! We try to make this process as simple as possible for our customers, but if you are unfamiliar the process or have any other questions, please visit our How to Buy a Suppressor page for more details.
Griffin Armament
Energetic Armament
