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Questions & Answers
Will this work on a PTR101 308? Expert Answer

The Magpul Industries SL Grip Modules & HK Polymer Trigger Housing (ESK) can work however, If your firearm is equipped with an Ambi/Navy/FBI trigger pack it must be exchanged for a SEF/SAFE-SEMI trigger pack in order to function with the Magpul ESK.

by Ethan, Gear Expert, March 16, 2022
Will this work on the c308 without modification? Expert Answer

Was not provided with that information recommend reaching out to manufacturer.

by Ryan Tarczynski, Gear Expert, September 4, 2021
Customer Reviews
Helpful Positive Review
will not work with century C308 trigger pack by Kurt, Verified Owner, May 15, 2022
The safety does not work with century C308 trigger pack, THE HAMMER WILL DROP WITH TRIGGER PULLED AND THE SELECTOR IN THE SAFE POSITION. I had to swap the trigger pack to the SEF and it works fine. The safety does not work with century C308 trigger ...
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1/3 found this helpful
Helpful Positive Review
Magpul ESK Selector Switch by JC, Verified Owner, January 26, 2022
This is the best upgrade you can do for your MP5 or similar roller delayed blowback clone. This will only work with an SEF trigger pack. I bought one for a K model and I should have went ahead and bought another ESK for my full size MP5 clone. I will...
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2/2 found this helpful
Helpful Positive Review
smooth operator by thewolf, Verified Owner, February 10, 2022
Works perfectly on the AP5-P. Since the right side grip module has contoured bevels the full sized selector wont work without modification but the round and small version works perfectly. It is super smooth and easy to actuate. Highly recommended, hi...
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4/4 found this helpful
Helpful Positive Review
Another quality Magpul product by nineteen mm, Verified Owner, June 24, 2020
It's what you would expect from Magpul, perfection. I installed on an SEF trigger pack with a Navy housing. Fits very well. Two things I really like about it. 1) Extra length. I already had the HK extended saftey lever, but it was too short for my sm...
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5/5 found this helpful
Most Recent Reviews
MP-5 Clone MAC 5 safety replacement by Kap, Verified Owner, June 7, 2025
Safety went in without a hitch. Took 5 mins to replace have already ranged the gun with the new safety. They have been no issues with the safety went in flawlessly. Went into a full size MAC 5 no mods needed. I also placed same safety in MAC 5k wi...
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Most Recent Reviews
Safety lever by Jpops, Verified Owner, April 10, 2025
Safety lever works as advertised. Magpul creates another useful peace of kit.
Read All 14 Reviews
Color: Black Gun Model: Heckler & Koch G3 , Heckler & Koch HK91 , Heckler & Koch HK93 , Heckler & Koch HK94 , Heckler & Koch MP5 , Heckler & Koch SP5K Hand: Ambidextrous Condition: New

Code: 55-RFS-MAG203-MAG1071-BLK

MPN: MAG1071-BLK

UPC: 840815122623

List: $49.95Save $4.00
$45.95

Product Info for Magpul Industries SL Grip Modules & HK Polymer Trigger Housings

The Magpul ESK (Enhanced Selector Kit) offers a variety of selector levers for the Magpul SL Grip Module & HK Polymer Trigger Housings. Keeping with the Magpul blueprint of innovation, the Magpul ESK results in a modular, ambidextrous selector with enhanced ergonomics. It provides a modern rendition of the classic MP5 SSL with updated aesthetics. With easier access to the user-configurable levers, the Magpul ESK allows quick firing hand activation and deactivation of the safety and provides for ambidextrous use. Constructed of our high-strength polymer and corrosion-resistant steel, these components are built with the proven reliability Magpul is known for. RESOURCES The Magpul ESK is compatible with SEF/SAFE-SEMI trigger packs and is NOT compatible with Ambi/Navy/FBI or CETME trigger packs. If your firearm is equipped with an Ambi/Navy/FBI trigger pack it must be exchanged for a SEF/SAFE-SEMI trigger pack in order to function with the Magpul ESK.image

Specifications for Magpul Industries SL Grip Modules & HK Polymer Trigger Housings:

Manufacturer: Magpul Industries
Color: Black
Gun Make: Heckler & Koch
Gun Model: Heckler & Koch SP5K, Heckler & Koch G3, Heckler & Koch HK93, Heckler & Koch HK94, Heckler & Koch HK91, Heckler & Koch MP5
Fabric/Material: Corrosion-resistant Steel Components, High-strength Polymer
Hand: Ambidextrous
Condition: New

Features of Magpul Industries SL Grip Modules & HK Polymer Trigger Housings:

  • Ambidextrous selector that's easier to use
  • Simple upgrade, better functionality
  • User-configurable levers for ambidextrous use
  • Compatible with three-position SEF/SAFE-SEMI trigger packs
  • Easier firing hand access to selector levers
  • Rugged, dependable construction
  • Constructed of high-strength polymer and corrosion-resistant steel components
  • Exceeds usability and performance of HK pattern SSL/ESSL

Package Contents:

  • Magpul Industries SL Grip Modules & HK Polymer Trigger Housings

Magpul Industries SL Grip Modules & HK Polymer Trigger Housings Orderable Models

List of Orderable Models

  • Magpul Industries ESK SL Grip Module & HK Polymer Trigger Housings, Black, MAG1071-BLK , MPN: MAG1071-BLK , UPC: 840815122623 , Code: 55-RFS-MAG203-MAG1071-BLK

Magpul Industries SL Grip Modules & HK Polymer Trigger Housings Unavailable & Discontinued Models

List of Unorderable Models

  • USED Magpul Industries ESK SL Grip Module & HK Polymer Trigger Housings, Black, MAG1071-BLK, EDEMO1, Used, Condition Like New , MPN: MAG1071-BLK-EDEMO1 , Code: 55-RFS-MAG203-MAG1071-BLK-EDEMO1
  • USED, Magpul Industries ESK SL Grip Module & HK Polymer Trigger Housings, Black, MAG1071-BLK , MPN: MAG1071-BLK-EDEMO , Code: 55-RFS-MAG203-MAG1071-BLK-EDEMO-IN-C
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