HK53 clone made by us . We start fro a HKParts flat , we bend it and weld it. Then we use an original HK33 bolt and we modify it to HK53 standard (HK53 original bolt are impossibile to find these days).
Then we install a new RCM barrel and some usedmilitary parts (like sights) and we can make a gun which is a perfect shooter at half the price of the competition. 
What this gun is not : it is not something you can brag about with your HK collector friends. To keep the price low we have to use or modify original military parts which can have some use marks etc. So this is not a collector gun. If you a collector gun buy it and pay its price. You cannot have a $5000 gun for $1700

What this gun is: Is a great shooter and clone. You will never be disappointed, some of our customer use them with full auto registered trigger packs and have thousands of ammunition through them without a problem. 

You can see this gun shooting on Youtube here (with soe others we make):  

https://youtu.be/oirTqxkZoAE

or our site www.interfor.us

Shipping is $60