A3 Industries
Modular Folding Brace - Picatinny Mount (1913)
Modular Folding Brace - Picatinny Mount (1913)
SKU:MFB-6.50-STR-PSB
Fits these firearms:Grand Power StribogSpringfield KunaH&KSig MPX / MCXB&TAK & VariantsAR & VariantsCZFN SCARGForce BladeIWIKelTec +17 more
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Specifications
- Weight: 1.12 lb
- Mount type: 1913 Picatinny
- Country of origin: USA
Product Description
Build a folding brace configured for your firearm and shooting preferences. The Modular Folding Brace mounts directly to a rear MIL-SPEC 1913 Picatinny rail and features multiple extension styles, lengths, brace ends, and optional accessories.
Key Features
- Modular design with multiple configuration options
- Sure-Lok™ folding hinge with push-button release and quick deployment
- Reversible hinge for left- or right-side folding
- Straight or offset aluminum extension arms
- Multiple extension lengths available
- Full-length M-LOK slots for sling-mount placement
- Optional Xeno Modular Cheek Rest
- Made in the USA
Choose Your Extension
Straight extensions position the brace directly behind the hinge and generally place it near the firearm’s bore centerline.
Offset extensions provide 1.25 inches of offset and can be installed in four positions. This allows you to:
- Clear charging handles, selectors, ejection ports, and other controls
- Adjust cheek height for different optics
- Position the brace higher or lower for comfort
Most applications use a 7.50- or 8.50-inch extension. Firearms with longer receivers may benefit from a shorter option.
Choose Your Brace End
- Polymer Steady-Brace: Compact and lightweight, injection-molded from 30% fiber-reinforced Zytel
- Aluminum Steady-Brace: Machined aluminum with a clamp-on mounting system
- Tailhook Adapter: Allows the use of Gear Head Works Tailhook braces, sold separately
Both Steady-Brace options include a Velcro forearm strap.
Sure-Lok™ Folding Hinge
The patent-pending Sure-Lok™ hinge is manufactured from 17-4 stainless steel using the metal injection molding process and finished with QPQ treatment for strength, wear resistance, and corrosion protection.
Press the button for controlled folding or pull firmly on the brace for quick deployment into the locked position. The hinge can be configured to fold left or right and mounts securely to a 1913 Picatinny rail.
Optional Firearm Adapter
The Modular Folding Brace mounts directly to a MIL-SPEC 1913 Picatinny rail. If your firearm does not have a rear 1913 rail, select the appropriate firearm-specific adapter when ordering.
Optional Xeno Cheek Rest
The M-LOK-mounted Xeno Modular Cheek Rest has three configurable heights:
- 5/8 inch
- 7/8 inch
- 1-1/8 inches
Its reversible design also allows the cheek rest to be positioned one inch to either side of the mounting point.
Overall Length
The following measurements are the overall length of the brace with the hinge and brace attached to the extension:
| Extension Length | Overall length w/ Hinge and Brace |
| 6.50" | 7-3/4" |
| 7.50" | 8-3/4" |
| 8.50" | 9-3/4" |
All primary components are machined from aluminum and finished with a low-gloss black anodizing. Made in the USA.
Super easy installation on a precision made product. Well designed and excellent finish
What a great choice! I’m thoroughly pleased with this brace and the option to add a butt plate to make it a folding stock in the near future. The 7. 5 is the perfect size for me and the anodized suits my Zpap Z92 Tactical. I know it will last indefinitely. The folding unit is really durable and locks up tight. Precision engineering is evident. Highly recommend
The brace is nice quality and there is no slop when it is locked open.
Title says it all, minimalist but gives you everything you need. Great for PCC’s, I went with the 8. 25” for my Stribog SP9A3 and found that to be the best length (I’m 6’1”). Great with the xeno cheek riser, only dinging a star because the wedge lock on mine has an annoying but not detrimental amount of slop and I hate when folding mechanisms allow for play. Might try to use some electrical tape to get a tighter fit, but fact remains the quality is solid otherwise and form and performance wise you can’t go wrong.
We used these for a X-Mas build a client wanted for a batch of CP33's for the family. They came quickly and the parts are very solid construction held up on the bench and obviously will be found under the tree. . . (maybe the best gift this X-mas) Great work from a great team amazing product!
great product, just as described. Fast shipping and fits perfectly
Put it on my vmac 45. Looks smeeeeexyyy
Ya i couldn't be happier with this product. Its sturdy, folds nicely, easy to actuate, made of good materials, and let's be honest looks pretty good
I installed the A3 Industries modular folding brace on my CZ Scorpion Evo3 S2, following the detailed instructions provided by the QR code, it was installed in less than 1 hour. The fit and finish is phenomenal! The 1913 interface matched exceptionally well with the HB Industries picatinny adapter. The versatility of the modular brace gives me plenty of options for future updates or configurations as needs change. Overall I’m extremely pleased with this folding brace.
Great brace. Solid with quality parts
Great brace with awesome fit and finish. Worked perfect, my goto brace from now on
Purchased this Brace for my MAC5K and it is AWESOME!! Very sturdy and very robust product. Great communication and Very fast shipping!! Thanks A3 Tactical!!
Great product, well made, fits like a glove.
Good quality all around. Solid brace arm and folding adapter locks firmly into place or folded and stays. Checks all the boxes for me.
Awesome brace. Well built. Folding mech is solid so far. Haven’t shot with it but seems to have a great lock up. Looks awesome on my 5. 56 mini Jack.
Excellent service. I called with questions and someone actually answered the phone and helped me.
I purchased the modular folding brace for my PSA JAKL. Easy to install and to adjust. Solid construction and operates smoothly.
I’m very satisfied with my purchase.
This is a complete game changer! Way more comfortable than the brace that came stock. Very Happy with this purchase... So much so, I ordered another. This new one has the cheek riser.
This thing is jam up and jelly tight. Solid Quality construction looks fantastic on the gun . Only problem I have is the cost it's expensive compared to other options but I guess you get what you pay for
Bought this for a folding solution for a 22 charger in a grey birch chassis, and it fits the bill perfectly. This brace was an integral part of my build philosophy and allows me to fit it in my backpack on hikes and camping trips. Solid lockup and high quality parts. I will buy more A3T parts when necessary.
Well made, sturdy and a perfect addition to my Ruger 57 LC charger.
The 1913 folding brace is by far the best I’ve ever used.
