Proud to be on the Frontline on the war on terror!

Additional Images

MFI LONG BARREL EXTENSION FOR HK53 / Vector 53 / PTR91 PDW Pistols 922r Compliant 8.625" to make a 16" Barrel

Designed specifically to fit the V53, HK53 & C53 Pistols to extend from 8.5" barrel to BATF 16" Legal Length.


Limited Supply: only 2 remaining
Was: $65.00
Sale: $45.00
Save: 31%
Save: $20.00

Customize Your Item

- Add a Fake Silencer / Outer Body -
 * required
- No Export / US DOS or US DOC -
 * required


MFI Adapter for SOCOM Style Fake Silencer (HK-94 / UZI Length) Fits 15mm X 1.0 Right Hand Threaded Barrels.

This page is ONLY for the ADAPTER / BARREL EXTENSION seen as "A" in the photo above.

You may also order (at an additional cost) the SOCOM Fake Silencer "B" that slides over the top of the ADAPTER via the "OPTIONS" tab.

Item "B" = SOCOM Fake Silencer for HK94 / UZI Carbine (Marked "US GOV")

The "OPTIONS" tab gives you Special Discount.

This adapter is weapons grade steel. The length is 218.2mm / 8.62 inches, which if permanently attached will give you about 16.25" of barrel. This added length will give you the much needed barrel length to make a 100% BATF legal rifle.

NOTE: Even though the overall length of this adapter is 8.62" part of that is the threads. As you can only count the threaded area once (threads in the adapter cover the threads on the barrel) the total ADDED LENGTH to any weapons system's barrel would be about 8.20".

So now you can turn your HK51 / HK 53 parts set or Vector V53 or PTR91 PDW into a legal semi rifle. This will fit any weapon with a 15mm X 1.0 Right Hand Thread. The internal hole diameter that the bullet passes through is 0.468" in diameter. We made this large enough to keep the escaping gases from affecting the bullet trajectory. The larger hole size also helps keep the weight down. In the end this is much lighter than a long 16' barrel version. The weight of the product is only 4.4oz!

We deliberately made this adapter / barrel extension out of steel so it can easily be to meet BATF permanently attached criteria. In order to allow the adapter to be completely hidden by the SOCOM Fake Silencer / Barrel Shroud we had to make the wall thickness very thin. Thus; Blind Pinning is NOT really an option. The thin wall lends itself to High Temperature Silver Soldering or you can weld a deep penetrating bead half way (minimum) around the circumference of the O.D. of the barrel / adapter. All NFA & BATF Rules apply.

Fake Silencers are also known as: Dummy Can, Faux Suppressor, Mock Silencer, Barrel Shroud & Non Functional Sound Suppressor.

No FFL needed, No Special License, No Permit Required & No Special Tax Stamp needed to order.

This accessory does NOT affect the accuracy of the weapon in any way.


  • 1 - Adapter / Barrel Extension ONLY

All MFI Barrel Shrouds / Fake Silencer / Mock Suppressors are 100% Cosmetic & have ZERO Function. Unlike true vented barrel shrouds / heat shields our products make NO CLAIM to any protection from heat that is generated from the barrel. As you fire, your barrel will heat up and that heat is directly transferred to the MFI Product. Therefore you should NEVER grab hold of the MFI Product if you have fired more than 5 rounds, as you WILL burn your hands.


In accordance with the Joe Biden & Beto O’Rourke directive I personally as well my company no longer own(s) or possess any firearms or ammunition. This includes but is not limited to: Handguns, Pistols, Shotguns, Rifles, NFA items, Hog Legs, Fire Sticks, Smoke Poles and or Thunder Clubs.

All firearms that appear on our web site, regardless of what is written about them, are not owned by the company nor possessed by anyone associated with MFI and may even be CGI / PhotoShop.

Therefore regardless of any new firearms laws / taxes, no probable cause can EVER be assumed on any property (stationary or mobile) owed by myself or MFI.

AGAIN: We are 100% in compliance with any possible new “Biden / O’Rourke Public Safety Act” and therefore NO PROBABLE CAUSE could ever be assumed.

Lastly anyone arriving with a warrant of any kind will be assumed to be an IMPOSTER with intent on murdering us and will be treated as such without warning.

Those invading our territory may receive serious and even fatal wounds from rusty blades, clubs with bent nails, spear tips, arrows and or crossbow bolts.


This item is NOT RESTRICTED FOR DOMESTIC US SALES in any way and we offer DOMESTIC USA shipping to ANYONE. We ship to all 50 US States as well as all US Territories i.e. Guam & Puerto Rico. Sorry we can NOT ship to ANY APO address regardless of actual location.

This item is 100% RESTRICTED FOR EXPORT OUTSIDE THE USA. The US Department of State regulates / restricts this product and it is NOT EXPORTABLE outside the USA even to LE, Governments or Military without State Department approval.

This approval is AVAILABLE through MFI as we are an ITAR / Dept. of State Registrant with the Directorate of Defense and Trade Controls Office. We can obtain a US State Dept. Export License for you.

Please feel free to contact us if you have any questions on this issue.


  • MFI
  • Available
  • New


Shipping Information

  • Item Requires Shipping
  • 0.1 lbs.
  • $3.90

Customer Reviews

Comment Total Reviews (2)

Great Product Solved All My Problems!!
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 3 months

Purchased from: MFIAP.COM

I cannot express how impressed I am with both the quality of your product and the caliber of your customer service. I have already shortened my barrel and pinned this to it, It looks outstanding and reduces flash considerably. It also "sings" whenever it is charged or fired, an added quirk that I had only read about previously in forums. I will send pictures ASAP and will be ordering the long style for my VEPR 308 "svd" build ASAP as well. Thank you again for offering a very wide array of high quality products with outstanding customer service in a climate that is currently plagued by the exact opposite.

C93 pistol barrel extension
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: MFIAP.COM

Rarely do I find a product that impresses me as much as the long barrel extension and faux suppressor shroud that I received from MFI today. The fit was perfect , so much that it appeared to be premanufactured on my rifle/build from the beginning! Thanks again guys, I'll be sure to spread the good word!

You must login to post a review.

Share MFI LONG BARREL EXTENSION FOR HK53 / Vector 53 / PTR91 PDW Pistols 922r Compliant 8.625" to make a 16" Barrel on Facebook

Items: 0
Total: $0.00

Why Shop From MFIAP?

Fast Shipping

SHIPPING IS INCLUDED on all orders over $82.00 See our detailed shipping rates. 60 Day Money Back on Returns. View our policies and procedures.

Superior Customer Service

Find the answers to commonly asked questions.

Secure Web Transactions

All transactions involving personal information are secured through SSL encryption.