Shop now and get Free Value Shipping on most orders over $49 to the
contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.
Enjoy our FREE RETURNS
We want to ensure that making a return is as easy and hassle-free as possible! If for any
reason you are not satisfied with your purchase, simply return the item within 30 days of
receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-4a2896bb1ee/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
A3 Industries Modular Folding Stock w/ Picatinny 1913 Mount Up to 26% Off w/ Free S&H — 18 models
From A3's website it's just the length of the bar. For hinge add 7/16". The 43 Butt plate with rubber pad adds 11/16". The Magpul butt plates add 1+3/8" or 1-5/16". The xtendo narrow butt plate adds 2+1/2"
I really like the ability to tailor make my own A3 stock using the various components available. I would highly recommend visiting the A3 tactical website to get more detail idea of the components and their dimensions. The stock is solid with no woo...
Read More...
This A3 side folder is very stable, strong and compact when folded. I purchase it for my Scorpion Evo3 S2 micro SBR mainly to fit in a gray man sling pack for EDC.
Optics Planet had about the best selection and great prices around. Shipping was extr...
Read More...
The quality is amazing I love that it feels sturdy and locks in palce has a little bit of play after soem use though just tighten down the button you fold it with an Alan key and give it a dot of loctite and it’s perfection the length of pull was per...
Read More...
1/1 found this helpful
Helpful Positive Review
Nice quality
by
Shooter McGavin,
January 21, 2024
Really nice quality the offset is a lot more comfortable than the street. I just wish I had chosen a longer length the 7.75 is a little short.
2/2 found this helpful
Most Recent Reviews
Great product.
by
LemmyGibbler,
July 11, 2023
Thanks to optics planet for the great price and quick delivery of the item! I’m still waiting on the stamp to be able to use it but it arrived fast and looks great. AT3 seems like a really good company with high quality products.
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Expires in 5 hours. Cannot be combined with other promotions or offers.
Show In Stock Only
18 Models Available
Show with deals only:
Coupon Available
Additional Features
All
Included Accessories
All
Search
Additional Features: 8.25In Offset Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-OFF-BP2
MPN: MS-H2-8.25-OFF-BP2
UPC: 810151874142
List: $269.99Save 26%
$199.95
Additional Features: 7.75In Offset Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-OFF-BP2
MPN: MS-H2-7.75-OFF-BP2
List: $239.99Save 17%
$199.95
Additional Features: 6.25In Offset Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-6-25-OFF-BP2
MPN: MS-H2-6.25-OFF-BP2
List: $269.99Save 26%
$199.95
Additional Features: 6.25In Straight Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-6-25-STR-BP2
MPN: MS-H2-6.25-STR-BP2
List: $259.99Save 23%
$199.95
Additional Features: 8.25In Straight Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-STR-BP2
MPN: MS-H2-8.25-STR-BP2
UPC: 810151875156
List: $249.99Save 20%
$199.95
Additional Features: 6.25In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-6-25-OFF-BP3
MPN: MS-H2-6.25-OFF-BP3
List: $259.95Save $10.00
$249.95
Additional Features: 6.25In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-6-25-OFF-BP4
MPN: MS-H2-6.25-OFF-BP4
List: $289.99Save 14%
$249.95
Additional Features: 8.25In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-OFF-BP4
MPN: MS-H2-8.25-OFF-BP4
UPC: 810151871516
List: $289.99Save 14%
$249.95
Additional Features: 7.75In Straight Extension Arm Included Accessories: A3T Aluminum Butt-Plate With Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-STR-BP2
MPN: MS-H2-7.75-STR-BP2
UPC: 810151873664
List: $249.99Save 20%
$199.95
Additional Features: 8.25In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-OFF-BP3
MPN: MS-H2-8.25-OFF-BP3
UPC: 810151875163
List: $285.99Save 13%
$249.95
Additional Features: 8.25In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-STR-BP4
MPN: MS-H2-8.25-STR-BP4
UPC: 810151874920
List: $269.99Save $20.04
$249.95
Additional Features: 7.75In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-STR-BP4
MPN: MS-H2-7.75-STR-BP4
UPC: 810151875170
List: $279.99Save 11%
$249.95
Additional Features: 7.75In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-OFF-BP4
MPN: MS-H2-7.75-OFF-BP4
UPC: 810151871684
List: $279.99Save 11%
$249.95
Additional Features: 7.75In Offset Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-OFF-BP3
MPN: MS-H2-7.75-OFF-BP3
UPC: 810151871677
List: $269.99Save $20.04
$249.95
Additional Features: 7.75In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-7-75-STR-BP3
MPN: MS-H2-7.75-STR-BP3
UPC: 810151874906
List: $259.95Save $10.00
$249.95
Additional Features: 6.25In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-6-25-STR-BP3
MPN: MS-H2-6.25-STR-BP3
List: $259.95Save $10.00
$249.95
Additional Features: 8.25In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad
Code: 69H-RSF-MFS13P-MS-H2-8-25-STR-BP3
MPN: MS-H2-8.25-STR-BP3
UPC: 810151874913
List: $269.99Save $20.04
$249.95
Additional Features: 6.25In Straight Extension Arm Included Accessories: Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad
Product Info for A3 Industries Modular Folding Stock w/ Picatinny 1913 Mount
These Modular stocks are designed for firearms that already have a rear Picatinny rail. They are available in multiple configurations to customize your stock for just about any application.The hinge can be mounted to fold left or right, and latches in both the open and closed positions. The offset extension arms are available in straight or offset, and in 6 different lengths. The offset extensions allow the user to configure their stock in 4 different setups as shown in the appropriate product images. This allows the user to raise or lower their cheek rest, avoid obstacles like side charging handles or ejection ports, and raise or lower the buttplate.All components are machined from aluminum and anodized low-gloss black.
Our extension arms are available in both straight or offset configurations. Straight extensions simply extend rearward, positioning the stock end in line with the hinge point. Offset extensions offset one end 1.25" from center. Each end is symmetrical, allowing the user to mount it in 4 different positions. These offsets can be used to clear objects such as an ejection port or charging handle, raise/lower a cheek weld for different height optics, or position the brace end higher or lower to suit your shooting preference.Â
All extension arms incorporate M-LOK slots along the full length of the arm. This allows the user to mount a QD (Quick-disconnect) sling mount anywhere on the extension, or any other M-LOK accessory. This also allows you to mount the A3 Clamp-on cheek rest CRU-101 or the XENO Adjustable Cheek Riser