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Questions & Answers
Will any of these fit on HK MP5 22LR Pistol? Expert Answer

If you install a picatinny/1913 stock adapter, such as the Haga Defense 1913 adapter (linked below), you would be able to use any of these stocks that utilize the AT3 Picatinny Hinge.
https://hagadefense.com/1913-adapter-for-hk-mp5-22lr/

by Ethan, Gear Expert, July 24, 2023
Do I need the 2-bolt attachment for an APC45? Also, any other attachments required? Expert Answer

If you have a 1913 rear interface, you will need to use the picatinny hinge. If you do not have a 1913 interface, you will need to use the 2-bolt hinge.

by Ethan, Gear Expert, March 1, 2024
Customer Reviews
Helpful Positive Review Best Picatinny Stock on the Market by Thomas, November 15, 2022
I looked high and low across the internet before picking the A3 stock. The construction is solid and the butt pad is excellent. There are three things to know about this item: 1) Depending on your gun, the cheek pad puts your eye level higher than mo...
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4/4 found this helpful
Helpful Positive Review A3 stock for fm15 by Thomas Hoyle, March 20, 2022
Great lightweight folding stock, push button mechanism to open and close, solid cheek weld, comfy butt pad. Will be grabbing more of these down the line. Currently have it on a Foxtrotmike fm15, makes it look like a poor man's mpx
3/3 found this helpful
Most Recent Reviews Great upgrade by Doug, Verified Owner, February 13, 2024
I have a fused spine so my neck is unable to bend to see through the normal height of red dots, especially on rifles. Submitted my AR pistols for SBR designation so I could extend the stock and make it easier to focus and see the scope. This adds 2 1...
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Most Recent Reviews Does not fit by Curt, Verified Owner, January 27, 2024
Advertised that it fits most picatinny rails but it doesn't fit mine. It slides over the rail but there's no way to tighten it to the rail. Will be returning it.
Most Recent Reviews Folding stock for pistol. by DDonnie, December 11, 2023
High quality machined skeleton-style folding stock. No buttons to push to open or close.
Most Recent Reviews Nice lil' skelestock by Keithy baby, Verified Owner, September 22, 2023
I like this stock. Kinda wanted the 11.5" but at time of my ordering, it wasn't in stock at OP & now it is of course. No issue though. This one is good enough. Definitely better instructions would've been a nice addition instead of the tiny piece of ...
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Read All 7 Reviews
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Product Info for A3 Tactical Skelestock Skeleton Stock

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The A3 Tactical Skelestocks are fixed length skeleton stocks machined completely from 6061 aluminum. They are available in two lengths: 9.50in and 11.00in. They are also available with 2 different hinge options. The hinges fold right or left depending on how you mount the hinge. See hinge details below.

Each stock comes with a 1/2in polymer cheek rest, 90 durometer Neoprene buttpad, and one steel, full rotation QD lug that can attach in 2 different locations on the right or left of the stock.

Approved/Tested applications:

CZ BREN 2

CZ SCORPION

B&T APC9/45 and APC223/300

B&T GHM

HK MP5 and MP5K

SIG MPX/MCX (use Picatinny)

RUGER PC CHARGER (use Picatinny)

GALIL ACE

MOST FIREARMS WITH A REAR PICATINNY RAIL

NOTE: There are 2 hinges available for the Skelestock - Standard 2-bolt hinge and the A3T Picatinny hinge. Please review the details below to select the correct hinge for your application:

Standard A3T 2-bolt hinge - This hinge is designed to attach to our various firearm adapters. This is used if you do not have a rear Picatinny rail. You will need one of our various firearm adapters to attach the Skelestock to your weapon.

Standard A3T Picatinny hinge - Our Picatinny hinge works for all applications with at least 3 Picatinny slots.

Specifications for A3 Tactical Skelestock Skeleton Stock:

Manufacturer: A3 Tactical
Color: Black
Fabric/Material: 6061 T6 Aluminum
Gun Model: Universal
Gun Type: Carbine
Gun Make: Universal
Hand: Ambidextrous
Condition: New

Features of A3 Tactical Skelestock Skeleton Stock

  • 9.50-11in from mounting face to back of buttpad
  • Folds left or right depending on how hinge is mounted
  • A3 Tactical firearm adapters are sold separately

Package Contents:

  • A3 Tactical Skelestock Skeleton Stock
  • Nylon 1/2in cheek riser
  • 1 modular steel full-rotation QD sling mount

A3 Tactical Skelestock Skeleton Stock Orderable Models

List of Orderable Models

A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Standard 2-bolt Hinge, 9.5in, Black, SK-H1-9.50 , MPN: SK-H1-9.50 , Code: 4TZ-RK-SK8SS-SK-H1-9-50
A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, A3T Picatinny Hinge, 9.5in, Black, SK-H2-9.50 , MPN: SK-H2-9.50 , Code: 4TZ-RK-SK8SS-SK-H2-9-50
A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, A3T Picatinny Hinge, 11.00in, Black, SK-H2-11.00 , MPN: SK-H2-11.00 , Code: 4TZ-RK-SK8SS-SK-H2-11-00

A3 Tactical Skelestock Skeleton Stock Unavailable & Discontinued Models

List of Unorderable Models

A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Standard 2-bolt Hinge, 11.00in, Black, SK-H1-11.00 , MPN: SK-H1-11.00 , Code: 4TZ-RK-SK8SS-SK-H1-11-00
DEMO, A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Standard 2-bolt Hinge, 9.5in, Black, SK-H1-9.50 , MPN: SK-H1-9.50-DEMO , Code: 4TZ-RK-SK8SS-SK-H1-9-50-DEMO
DEMO, A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Sig Sauer Hinge, 9.5in, Black, SK-H3-9.50 , MPN: SK-H3-9.50-DEMO , Code: 4TZ-RK-SK8SS-SK-H3-9-50-DEMO
DEMO, A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, A3T Picatinny Hinge, 9.5in, Black, SK-H2-9.50 , MPN: SK-H2-9.50-DEMO , Code: 4TZ-RK-SK8SS-SK-H2-9-50-DEMO
A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Sig Sauer Hinge, 9.5in, Black, SK-H3-9.50 , MPN: SK-H3-9.50 , Code: 4TZ-RK-SK8SS-SK-H3-9-50
A3 Tactical Skelestock Skeleton Stock, 6061 T6 Aluminum, Sig Sauer Hinge, 11.00in, Black, SK-H3-11.00 , MPN: SK-H3-11.00 , Code: 4TZ-RK-SK8SS-SK-H3-11-00
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