All of our services are
available to you in machinegun configuration (NFA-BATF) or semi-auto
for those of you that want a unique piece in your collection.
COMING SOON! WHAT IS THE DIFFERENCE
BETWEEN A HK21/21EUG AND A HK21E?
Both are GREAT systems but have major differences. Due to the many calls we
receive on what the cost of a HK21E is, when what is actually being asked about is
the HK21(60's era) that is out there being sold and marked as a "21E". We trademarked our
Upgraded 21 as "21EUG" and are very clear to our clients that it is an upgraded
60's era 21and would never call it an "E". We have built and sold both over the
years. If your looking for a "21E" and it doesn't have a "E" swing down feed mechanism it is not even close.
But we have been spending so much time on the phone educating potential clients
that we felt if its explained on our site a educated decisions can be made on
either system. We do have a limited number of "21E" UBF's available, with HK
German "E" swing down feed mechs and bolt carriers. These can be converted to
.223 with the proper swing down feed mech, bolt head, locking piece and barrel
in a matter of minutes! To all our clients that have been patient on the backlog
of "21EUG" and "21UBF" builds we appreciate you. Almost up to date
and working on decent time frames.
Click here and step into the world of 308 Belt Feds. RDTS has
pioneered some of the most sophisticated Belt Fed HK's you'll ever see.
(Universal Belt Fed) 9" to 22" Barrel
This is the one that everybody wants! Imagine a Belt Fed that can be
configured as a Pistol with a 9" barrel. Then in 5 minutes be taking out targets
at 1000 yards with deadly accuracy. Basically the most compact belted on the
planet! This weapon sports a quick change 9" barrel and cut down shroud. We can
also set it up with a 14.5" barrel and permanent brake for a 16" length for the
semi auto folks who are saving for that sear. We will paper as a Short barrel
rifle at no extra charge if you'd like. Note: HK21K-UBF is our model designation referring to
our HK MP5/HK51 sized belt fed with a short shroud with Quick Change
Barrel. Basically a really, really short 21 that runs!!!!! On
our receiver or yours. Available as a Pistol, Rifle, SBR or AOW.
HK11-UMF(308)(Universal Mag Fed) 9" to 22" Barrel
Identical to the RDTS HK21-UBF. This is the Ultimate 308 mag fed weapon. Just
begging to test the soon to be produced 100 Beta Drum! Available as Pistol,
Rifle, SBR or AOW
Upgrades-Can be performed on Spec Quality Clones
HKG3, HKG3K,HK51 and
HK51K(PDW) available as NFA or Semi Upgrades
We have a variety of factory/custom services
to upgrade your .308 into a unique addition to your
HK51(308) or HK53(223)Improved
with 8.3" Barrel
HK51-SA or HK53-SA in Semi Auto
with 16.25" Barrel or Extension
Can be built on HK91,SR9,SAR8, Clones, G3 Dealer Samples or Conversions.
Here we can turn your 308 into an 8.3" super compact and controllable fire
belcher! Make it even more compact and try one of our strong lightweight
aluminum side folders. This little goodie can be set up to fold right or left
and has adjustable comb, your choice!
Available as a Pistol, Rifle, SBR or AOW.
HK51K(308) 5" Barrel
This 5" barreled fire breather is the 308 version of the MP5K. I have to
thank Eric and Jeff for their blazing the trail on putting together one that
actually runs! Quite an achievement! Thanks Eric for letting us dissect yours
and seeing what makes this Monster tick! Available as a Pistol, SBR or AOW.
This is HK Germany's shortest production 308! If a HK Factory perfect G3K with a
12" barrel is what you want this one won't disappoint! Available as a Rifle or
In production since the 60's this is considered the worlds best 9mm
Submachine gun! Let us bring yours to the factory perfect spec it deserves.
Check it out.
HKMP5SD HE (High Efficiency)
We challenge anyone to find a better
MP5SD anywhere not only at our
reasonable price, but ANY
PRICE, Dealer sample original
or conversion MP5SD!!
Another RDTS exclusive!
We have always listened to our customers to our benefit,
because they always come up with ideas that we can make
happen! One of the best and most popular especially where it
concerns the HK 94 is the our “MP5SD REPLICA SERIES”
The Ultra Compact 9mm Sub Machinegun! Let us do the works! How about a
HK Contract Hammer Forged Barrel, Mag Flap, Factory Perfect Markings in "MP5K"
or "MP5K-N" and don't forget the Exact HK Black Finish in our Tri-Coat Finish