SP5 Modifications for SBR?

[Bananas79]

I saw some earlier threads on here... with a couple incredible custom A2 stock modifications designs to get an Sp5 to 29"

Unfortunately, I am no machinist and have no tools to even tinker around.

Has anyone come up with a modest modification path (stock A, with B stock pad glued & nailed with C stock connection adapter) or found a source for some customized stock to get to 29"?
p&w to stock barrel is not a path Im interested in pursuing...

Thank you in adv. for your input / suggestions / guidance

VR

 

[teratos]

Permanently attached suppressor is an option.

 

[Bananas79]

Permanently attached suppressor is an option.

ugh was planning on ordering a Revolution 9 for this SP5 today (last day of Griffin's Tax Stamp Rebate)... I guess I could go the the GP5 -- no I cant, thats just for 5.56. Not sure about DT cans for 9mm. This is really not what I want to do.

Really would prefer a stock mod. Some of the users here had a really cool design where they cut the rubber/plastic end, inserted some rods for additional LOP.

 

[Squaregrouper]

I am waiting on a stamp for an MKE AP5 (MP5 clone). The link below would be the easiest, least expensive route, but wouldn't look correct. Add to that, your fellow H&K folks would think you're one of "the poors" for needing to use AR furniture on your SP5.

HKP MP5 AR Stock, Brace Adapter

AR, M4 Stock, Brace Adapter - MP5, 93,33

hkparts.net

 

[Bertfish]

How much more length do you need if you install one of the HK collapsible stocks?

 

[MaicoBill]

I made a spacer .625" long and added a A-2 stock. Ill look for complete picture later. It ended up being 29.1"

 

[MaicoBill]

Here is the A-2 stock

 

[Mike OTDP]

Thought: Get an MP5 end cap with a sling swivel. Remove the sling swivel. Use a wood screw to fasten a dowel of suitable length. Put a buttplate on the dowel...or just some padding.

Second thought: Get an MP5 end cap with a 1913 rail section. Find a suitable stock (accepting that you might have to pad the end).

The right answer would, of course, be a run of wooden or plastic stocks with the appropriate fittings.

 

[Ghostrider1]

This stock has spacers you can add to get the length you need. Maintains the HK look that an AR stock kills.

Choate MP5 & HK94 Tactical Folding Stock

MP5, HK94 Tactical Folding Stock

hkparts.net

 

[rayrevolver]

Another path is to have someone make a suppressor shroud like this, pin and done!

Easier said than done though, I asked TACSOL if they could sell the shroud separately and never heard back. This was back when they had AR uppers with similar setups.

 

[teratos]

Another path is to have someone make a suppressor shroud like this, pin and done!

Easier said than done though, I asked TACSOL if they could sell the shroud separately and never heard back. This was back when they had AR uppers with similar setups.

That's pretty easy to make.

 

[outrider58]

Here is the A-2 stock

That looks like an M16 with an MP5 hanging out of its mouth!

This stock has spacers you can add to get the length you need. Maintains the HK look that an AR stock kills.

Choate MP5 & HK94 Tactical Folding Stock

MP5, HK94 Tactical Folding Stock

hkparts.net

Winner!

(except for the price...)

 

[smdub]

Paging Mr SG. Paging Mr SG...

 

[Squaregrouper]

Paging Mr SG. Paging Mr SG...

Order one of the stocks linked below then throw some cash to SMDUB and you'll have a MD compliant SBR. Mine is a MKE/Century AP5 and is 29.1" to the tip of the barrel threads.
The tax stamp is in hand and the SBR has been built.

ETA- A single deck screw is also required.

MP5 HK33 FOLDING STOCK W/ FOUR BUTTPADS, AC-UNITY

MP5 HK33 FOLDING STOCK W/ FOUR BUTTPADS, AC-UNITY

www.robertrtg.com

 

[Squaregrouper]

This stock has spacers you can add to get the length you need. Maintains the HK look that an AR stock kills.

Choate MP5 & HK94 Tactical Folding Stock

MP5, HK94 Tactical Folding Stock

hkparts.net

The same item is available at RTG for a lot less. However, they will still come up about 3/4" too short.

MP5 SP5 HK33 CHOATE ADJUSTABLE FOLDING STOCK

MP5 SP5 HK33 CHOATE ADJUSTABLE FOLDING STOCK

www.robertrtg.com

 

[sniiped]

so who has the spacer?

 

[Bananas79]

That looks like an M16 with an MP5 hanging out of its mouth!

Winner!

(except for the price...)

Close... but its a folding stock. Im hopefully a couple days from breaking jail on my 9mm can

 

[teratos]

I have read that the HK33 A2 stocks are longer, and will fit the MP5. Anyone know?

 

[smdub]

I have read that the HK33 A2 stocks are longer, and will fit the MP5. Anyone know?

The fixed A2 stocks are identical AFAIK. I went and checked the four spares I have in the parts bin, some w/ the rubber buffer and some without, and they all appear the same.

The ultra rare collapsing HK33A3 stocks are longer than the MP5 version. Since the 33 receiver is slightly longer, the rods on the stock are longer. A MP5 A3 stock will fit a 33 but not visa versa (well, I guess it would fit on but not collapse all the way to the locking position.) I do not know if the longer 33 stock results in a longer OAL/length of pull or not as I don't have one. Yet.

Its worth noting that the official OAL on the HK33A3 (collapsing) is longer than the HK33A2 (fixed). The collapsing vs fixed stock should be the only difference. I can go compare this on a MP5 A3 stock vs an A2.

 

[Jason22492]

The fixed A2 stocks are identical AFAIK. I went and checked the four spares I have in the parts bin, some w/ the rubber buffer and some without, and they all appear the same.

The ultra rare collapsing HK33A3 stocks are longer than the MP5 version. Since the 33 receiver is slightly longer, the rods on the stock are longer. A MP5 A3 stock will fit a 33 but not visa versa (well, I guess it would fit on but not collapse all the way to the locking position.) I do not know if the longer 33 stock results in a longer OAL/length of pull or not as I don't have one. Yet.

Its worth noting that the official OAL on the HK33A3 (collapsing) is longer than the HK33A2 (fixed). The collapsing vs fixed stock should be the only difference. I can go compare this on a MP5 A3 stock vs an A2.

How about replacing the buttpad of a HK33 A2 stock with a lengthier one onto an SP5 like this one?

H&K 33/91/93/53/G3 (5.56 / .223) & (7.62x51 / .308) Heavy Rubber Buttpad For HK A2 Fixed Stocks

HK German Heavy Rubber Buttpad For HK A2 Fixed Stocks

hkparts.net

I wouldn't know the exact dimensions so I'm not sure what the OAL would be but I wonder if that'll be anywhere closer to 29.