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Questions & Answers
Will this fit the HK MP5 .22 LR ? I ordered the A3 tactical rear stock adapter , and it doesn't work .. thanks ! Expert Answer

The JMac Customs 1913 Adapter Fits MP5K clones (will not fit reverse stretch), but may not be compatible with some SP5K models, due to tolerances.

by Ethan, Gear Expert, September 22, 2022
Customer Reviews
Helpful Positive Review Nice Snug Fit !!! by MLars, Verified Owner, November 15, 2022
I received this item along with the Jmac brace. All the components of the system were of the highest quality. This adapter was well finished and Fit very snug into the receiver so much that one the pins had to be tapped in. Some may view this as a ne...
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2/8 found this helpful
Helpful Positive Review JMAC IS SOLID GEAR by TicoTom, Verified Owner, March 15, 2024
Another piece of quality made JMAC gear. I recommend it but it's not cheap. I highly recommend Optics Planet as well - OUTSTANDING product selection and service!
1/8 found this helpful
Helpful Positive Review great quality by Paul, Verified Owner, November 9, 2024
This is just what I needed for my mp5 to run different folders. Did not dissapoint
1/3 found this helpful
Helpful Positive Review Mp5k picatinny conversion by Davechng, December 10, 2023
Great product concept ..it gives a mp5k platform with better stock options..made of product is well made.finishing is great ..however i need slight modification to the 2 holes to make it git my turkish AP5. So i did not give this 5 stars..i fo not kn...
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4/4 found this helpful
Helpful Negative Review Didn’t fit by Kendigg, Verified Owner, March 21, 2025
Holes did not line up for installation on Zenith ZF5k.
1/1 found this helpful
Most Recent Reviews Jmac sp5k adapter by Abc, Verified Owner, August 29, 2024
Looks nice but the holes need to be adjusted. I have an hk sp5k and not a clone. The Holes did not line up. I had to grind the holes to make it fit. I should not have to do additional work to make it fit for a quality product. Don't buy if u don't ha...
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6/6 found this helpful
Read All 8 Reviews

We've got an AWESOME deal for you!

Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Condition: New Color: Black Gun Make: Kalashnikov

Code: 4VI-STA-JMC0366-RSA-MP5K

MPN: RSA-MP5K

Blazin' Deal
List: $99.95Save 13%
$86.81

Product Info for JMac Customs 1913 Adapter for MP5K and Clones

(R)ailed(S)tock(A)dapter(MP5K)image

Finally a way to attach 1913 style stocks/braces to your MP5K.7076 T6 aluminumhard coat/black anodized1913 milspec railincludes choate bufferadjustable cheek wieldallows attachment of pistol bracesinstalls using factory pinsfits MP5K clones (will not fit reverse stretch)Attaching a stock to a pistol creates an SBR, all NFA rules and regulations apply.Will not work with collapsible PDW style stocks or braces

Specifications for JMac Customs 1913 Adapter for MP5K and Clones:

Manufacturer: JMac Customs
Condition: New
Color: Black
Gun Make: Kalashnikov
Gun Type: Rifle
Fabric/Material: 7075-T6 Aluminum
Mount Type: AK Mount

Features of JMac Customs 1913 Adapter for MP5K and Clones

  • 1913 Adapter for MP5K and Clones

Package Contents:

  • JMac Customs 1913 Adapter for MP5K and Clones

JMac Customs 1913 Adapter for MP5K and Clones Orderable Models

List of Orderable Models

JMac Customs 1913 Adapter for MP5K and Clones, Hardcoat Anodized, Black, RSA-MP5K , MPN: RSA-MP5K , Code: 4VI-STA-JMC0366-RSA-MP5K

JMac Customs 1913 Adapter for MP5K and Clones Unavailable & Discontinued Models

List of Unorderable Models

USED JMac Customs 1913 Adapter for MP5K and Clones, Hardcoat Anodized, Black, RSA-MP5K, EDEMO6, Used, Condition Fair , MPN: RSA-MP5K-EDEMO6 , Code: 4VI-STA-JMC0366-RSA-MP5K-EDEMO6
USED, JMac Customs 1913 Adapter for MP5K and Clones, Hardcoat Anodized, Black, RSA-MP5K , MPN: RSA-MP5K-EDEMO , Code: 4VI-STA-JMC0366-RSA-MP5K-EDEMO-SC-D
USED, JMac Customs 1913 Adapter for MP5K and Clones, Hardcoat Anodized, Black, RSA-MP5K , MPN: RSA-MP5K-EDEMO , Code: 4VI-STA-JMC0366-RSA-MP5K-EDEMO-RE-B
USED, JMac Customs 1913 Adapter for MP5K and Clones, Hardcoat Anodized, Black, RSA-MP5K , MPN: RSA-MP5K-EDEMO , Code: 4VI-STA-JMC0366-RSA-MP5K-EDEMO-US-C
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