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Custom Upper receivers (page 1) Page:  1  2  3  4  5  6  7  8  9  10
 

Disclaimer

Several brand names are cited on this site like COLT, SIG, H&K, UZI, FN, those are registered trademarks of those brand names, and are used here as a reference to the genuine COLT, SIG, H&K, UZI, FN parts that HDPS CORP sells, or because HDPS CORP offer services on COLT, SIG, H&K, UZI, FN weapons. Is to be clear that HDPS CORP is not affiliated with COLT, SIG, H&K, UZI, FN in any other way.


 

 About Compliance parts for SL8/G36 conversions

All conversions Title 1 (transfer like any other firearm) or registered SBR's (NFA) done by HDPS CORP. comply 100% with BATFE regulations regarding imported parts count in an Imported Assault Rifle 18-U.S.C. section 922(r) and also rendered impossible to modify for illegal full auto. 

Please if you are just purchasing parts, make sure to have your conversion is done in compliance. Compliance parts for Title 1 conversions and SBR's are  available to choose the needed 5 parts.

Warning, failure to comply will render your conversion illegal living you at mercy of $250,000.00 fine and up to 10 years in Fed Jail charges. Please be safe, be compliant !

Also note that another brand of conversion that uses a lower receiver/pistol grip as one piece and block for AR stocks, all their parts ARE NOT made in U.S. and none of them count as compliance parts. Don't make an illegal mistake!

 


CLICK ON PHOTOS FOR BIGGER IMAGE

 HDPS CORP conversion for Hk SL8-1/4/6/10 to Hk G36 .

The closest to Hk G36 conversion legally available anywhere

without being afraid that your rear end will blow in your face

Go from this....

to this...

Check the SBR section for more photos and configurations

 

        

This is one HK SL8-6 , 14.5" barrel with a pinned/welded flash suppressor for a 16.1" legal length

 

 REAL GUN PART not a plastic part or weld that will break 

(NEW and IMPROVED  third generation SL8 to G36 stock block, Built in Buffer/Recoil rod housing, included steel cross block eyelet/thumb screws.......IN STOCK NOW!

          

HK SL8 -1/4/6/10   to G36  Stock Block Conversion, steel screws included- $295 (IN STOCK)

NOW WITH  NEW HDPS FINISH SYSTEM, SCRATCH RESISTENT !!


 

PRICE LIST FOR LABOR AND PARTS FOR SL8-1 to G-36 CONVERSION

U.S. Parts

 


NEW     NEW     NEW     NEW     NEW     NEW     NEW     NEW

                

 

HK SL8 -1 or 4 and HK SL8 -6 to G36  Stock Block Conversion for ACR Folding/Collapsible stock, steel screws included-

(ACR Stock is an U.S. made compliance part) 

 

- $295  SL8/ACR Block with Eyelet/Thumbhole screws  (in stock) 

- $445  SL8/ACR Block with Eyelet/Thumbhole screws / Hardware to mount ACR Stock/ ACR Folding/Collapsible Stock (in stock)

 

 

NEW Stock Block design from HDPS CORP  for your SL8 1 or 6. This block uses the new ACR stock, it beats by far the Hk G36 Kv stock in feel, looks and ergonomics, also it folds in angle leaving the ejection port completely clear.

It is also much shorter when collapsed, 7 positions AND adjustable cheek piece as well. It locks solid when open or folded, with cheek piece down you have a comfortable position for the iron sights and if you are using optics just raise the cheek piece!

The ACR™ Telescoping/Folding Stock is made of high-impact composite polymer with a rubber butt pad. The seven position telescoping stock has an adjustable length of pull from 11” to 14”. The stock also unlocks and folds to the right side and is held open by a hinge detent, allowing for the rifle to become more compact but still able to be fired. An adjustable, locking cheek weld piece can raise 1/2” for better sight alignment with optics. A sling can be attached to the integral webbing loop, to a quick detach coupler that can swap to either side or to the single point sling loop. (ACR Stock is a product from  Bushmaster Brand name)

 

 


 

 

 

(NEW and IMPROVED) , Built in Buffer/Recoil rod housing, included steel cross block eyelet/thumb screws or Pin/Washer/Sling Ring options.......

IN STOCK NOW

          

NOW WITH  NEW HDPS FINISH SYSTEM, SCRATCH RESISTENT !!

HK SL8 -1 or 4 and HK SL8 -6 to G36  Stock Block Conversion, steel screws included- $295  (in stock) 

$48 - EXTRA Thumb screw and eyelet screw  (In stock) 

 


HK SL8 -1 or 4 and HK SL8 -6 to G36  Stock Block Conversion, Pin/ Washer/ Sling Ring included- $270  (in stock) 

$ 25 - EXTRA Pin/ Washer/ Ring  (In stock) 


 

                     

 

 

For SL8 conversions you will need the U.S. Compliance Parts Kit with the HDPS trigger, gas piston, operating rod, G36 bolt, floor plate (need 5 U.S. made compliance parts)

NOTE -

I went to a great deal of study and also sending German bolts to have a metallurgical analyzes made so my bolts are being made with the same material of the German bolts in a 15 axis Swiss CNC machine and  have the same cryo/heat treatment and back to be re-passed (reason why the German bolts are two tone), a very affordable price for this quality part, not a knock off after market made with mild steel that rust by touch. Introduction price gift for all those that patiently were waiting for it
 

If you already own some of those parts, You can purchase only what you need

   

G36 Bolt  - $     (compliance part out of stock  (not just another A.M. part, this part meets and exceeds the standards!!!)  Click here for manufacturing explanation Bolt Explanation 

G36E/SL8 Operating rod - $48 (compliance part out of stock

G36 Magazine Floor Plate - $22 (compliance part in stock

G36E/SL8 Gas Piston - $50 (compliance part in stock

SL8/G36 trigger -$135 (compliance part)  in stock  

SL8/ACR Block with Eyelet/Thumbhole screws / Hardware to mount ACR Stock/ ACR Folding/Collapsible Stock - $445   (compliance part) (in stock)

Buy The Compliance parts  in a Combo Kit  (You save money)

$       - 5 parts Kit, trigger, floor plate, bolt, gas piston, operating rod)  out of stock  

 

 


H&K Parts

 

SL8/ACR Block with Eyelet/Thumbhole screws- $295  (in stock) 

SL8/ACR Block with Eyelet/Thumbhole screws / Hardware to mount ACR Stock/ ACR Folding/Collapsible Stock- $445  (in stock)

HK SL8 -1 or 4 and HK SL8 -6 to G36  Stock Block Conversion, steel screws included- $295  (in stock) 

 

-HK genuine G36 Folding stock roll pin (alone) - $22.50 (in stock)

-HK genuine G36  push pin - $42

-HK G36 Mag Well - $65 (in stock)

-HK G36 FBI pistol grip - $295 (in stock)

-HK G36 2rb pistol grip - Safe/1/2 - $295 (in stock)

-HK G36 NAVY pistol grip - $295 (out of stock, more coming)

-HK G36 NAVY pistol grip  w 2rb- $325 (in stock)

-HK G36 "C" Folding stock w/ cheek piece-  $145 (in stock)

-HK G36 "C" Folding stock - $125 (in stock)

-HK G36 "E" and "K" and "C" Folding stock - $75(used) 

 

-Remove SL8-6 barrel (the ones with serial number in the barrel, see end the page for explanation) - $95

-Dye HK SL8-1 upper receiver only - $60

-Laser Engraving for SBR - $60

-Mill upper receiver to accept AR-15 mag well - $95 

-Mill upper receiver to accept G-36 mag well - $105

-Close opening between G-36 Mag Well and ejection port - $175 (not just a plastic cover, injection mold and mill.. extensive labor)

-Convert Real G-36 Pistol Grip to work with SL8 1/6 upper - $35

-Exchange parts from SL8-1/6  lower to G-36 Pistol Grip (or clone lower)- $20

- Drill and mill G36 lower for SL8-1/6 lower for SL8 safety (iFBI and NAVY lowers ) - $45

-Exchange extractor and ejector to new bolt- $35

-Exchange gas piston rings $5

-Exchange gas rod assemble $5

-Remove/cut/change profile/thread (1/2X28 tpi)/refinish/re-install barrel -$ 195

-Remove/cut/change profile/thread (15X1 metric with grove for HK flash suppressor clip)/refinish/re-install barrel -$ 210

-Permanently attach flash suppressor, blind pin and weld - $45

-Mill G36 Carrier to work with SL8 receiver - $95  (done right without heat transfer)

-Test fire weapon- $45

 


 

-USA made by HDPS Steel eyelet and thumb flat screw  and eyelet screw (pair) for  STANDARD  SL8

=>>Works on Standard USC/SL8 

For Thumb Flat Screw, you need to specify if is for folding stock or fixed stock

 $ 42 (IN STOCK) 


-USA made by HDPS Steel eyelet and thumb LONG cross block with flat and eyelet screw (pair)

$48 - Thumb screw and eyelet screw  (In stock) 

or

$ 25 - Pin/ Washer/ Ring  (In stock) 

 


   

G36 and  SL8-6 - Extended Bottom Rail and 2 Low Profile Screws   NO sharp edges $ 48.00 each (laser engraved "B" numbered (in stock)

 

G36 - Side  Rail and 2 Low Profile Screws  NO sharp edges $ 35.00 each (laser engraved "R" and "L" numbered (in stock)

SL8/6 - Side  Rail and 2 Low Profile Screws  NO sharp edges (in stock)


This is the HK SL8 stock block to G-36 Conversion, first generation seeing here!

         

Now a few photos for quality comparison.....

     

A little explanation, you may see conversions using the G36 pistol grips with full auto pictograms, those pictograms are just for looks and 100% legal per ATF, all installed internals are from the Semi Auto SL8 and selector will not swing pass the semi auto position.

The SL8 lower and G36 lower have the exact same internal trigger group cage dimensions and is just a matter of swap the parts.....just because one is using the G36 pistol grip it does not change (or can be changed) anything with the general function of this firearm using the semi auto parts, it's a matter of fact....the G36 internals can also be mounted in the factory thumbhole SL8 lower (that alone will not provide full auto fire), anything different than that is just false Internet statements from those that just want to stir their own meal.

Do never alter any parts in your conversion as it may render it unsafe or illegal, be compliant, be legal, be safe!


Here is the HK SL8-1 conversion to G-36 - Upper receiver Milling/Dye work

 Comparison of HK SL8-1 and SL8-6 Buffer House


     

NEW THIRD GENERATION HDPS G36 STOCK BLOCKS HAVE THIS HOUSING MILLED IN THE SAME BLOCK, YOU DON'T NEED USE THE POLYMER HK HOUSING ANYMORE!!!



Some explanations about "Why make it in Aluminum"

      

I choose the Rapid Prototype part to be clear so it would be easier to see the internal parts attached, it  could be in black or any other color.

For those that wonder if I will sell those parts in "durable" plastic, the answer is "no". Rapid Prototyping is what the name says.... a rapid part, it's used to check dimensions only from CAD files, would be not only expensive for each part but also unsafe to use those parts in a firearm taking the carrier and return spring rod abuse. Sure they look cool in the photo but looking closely they look like they were carved with a kitchen knife. Even the early SL8 itself suffer from polymer cracking problems in the lower receiver...and that's is a space age polymer.

Here is the Fast Prototype for the USC block that was done nearly a year ago, lower hinge crack after insertion of the roll pins a few times, material used was one of the "tuff plastic"

Another reason here, other brand stock block made from plastic come to us for replacement...

So, I decide to do the SL8 to G-36 Stock block in T6 Aluminum like the USC stock blocks are being made. The rapid prototype for the SL8 that you are seeing here do not reflect the final looks of the part, it was just to check if the dimensions were right.....the final product is very nice looking one.

 


              ATTENTION, before you send a SL8 for conversion in, please read this information:

1- If you are seeking any conversion that involves removing the barrel from your SL8 receiver, be aware that the last batch (2010) and forward of HK SL8-6 receivers that also have the serial number  engraved in the barrel (left side under hand guard) will require an extra service fee of $95 for this barrel removal. Even using the proper Hk tools (Mandrel and Barrel Nut Removal Tool) to remove the barrel nut sometimes is very hard  because Hk used Red Loctite by mistake on Barrel nut/trunion threads turning the necessary torque to remove the barrel nut way beyond from Hk own specifications for torque per HK G36 Armorer's Manual. Also, the barrel will need to be pressed out from polymer receiver.

If you send your SL8-6 to Hk, they will remove the barrel also, but when you compound the both way shipping and wait...is your decision.

 

2- take a look on your hammer first.  (I have newer hammers in stock)

The old gray SL8's come with a hammer without a ramp on the right side, those have a lower profile at top. IS NOT THE RAMP that is the problem, but a way to figure out which hammer is the newer. Hk upgraded to the ramped hammer on the factory black SL8's.
 
If you use a old non ramped hammer with the G36 pistol grip, it will seat a few thousands lower and carrier will not always lock the hammer down, The G36 uses a ramped hammer and the SL8 conversion using the G36 pistol grip also should use the ramped SL8 hammer (actually is the USC hammer, the ramp is for the  USC extractor arm to disengage the firing pin...is all part of a safety system)

 

     


Disclaimer

Several brand names are cited on this site like COLT, SIG, H&K, UZI, FN, those are registered trademarks of those brand names, and are used here as a reference to the genuine COLT, SIG, H&K, UZI parts that HDPS CORP sells, or because HDPS CORP offer services on COLT, SIG, H&K, UZI weapons. Is to be clear that HDPS CORP is not affiliated with COLT, SIG, H&K, UZI, FN in any other way.

 

 
 

 

 

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