Description
The JMac Customs™ 1913 Stock/Brace Adapter provides a rock-solid, versatile solution for mounting your stock or brace. Designed to be compatible with any 1913-style stock or brace, including our own stocks and braces paired with the 1913 Folding Mechanism, this adapter ensures a secure, reliable fit for your build. With a range of options, you will find the perfect adapter for your set up.
Key Features:
- Versatile Compatibility – Works with any 1913-style stock or brace, including JMac Customs™ stocks and braces
- Secure Fit – Ensures a rock-solid and reliable connection for your build
Specifications:
- 7075 T6 aluminum
- Type 3 Hardcoat Anodizing
| 1913 Stock | Brace Adapter | Weight | Fitment Notes |
| 4.5mm Folding AK (RSA-4.5) | 1.1 OZ | • May require fitting when used in conjunction with some PSA 4.5MM Trunnions • This adapter attaches in place of your factory stock using the factory hardware with no modifications |
| 5.5mm Folding AK (RSA-5.5) | 1.3 OZ | • These trunnions can be found in the SGL (Saiga) rifles and on the new KUSA Vityaz clone (KP-9) and KUSA folding rifles and pistols • This adapter attaches in place of your factory stock using the factory hardware with no modifications |
| Galil ACE (RSA-ACE) | 1.3 OZ | • Fits all ACE rifles and pistols Gen 1 and gen 2 |
| AK Milled Type 3 Fixed Stock* (RSA-AK) | 4 OZ | • Compatible with T3 pattern milled receiver with upper and lower tang • Requires the removal of the upper and lower stock tang* |
| AK Milled Type 3 Fixed Stock (RSA-AK-NTR) | 4.6 OZ | • No permanent modifications needed. The upper tang stays on the receiver, and the lower tang is replaced with our hardware. To revert, just reinstall the original lower tang |
| AKM Stamped Fixed Stock* (RSA-AKM) | 3.4 OZ | • Requires the removal of the stock tang • Tang screw does not align properly on PSA AKM pattern trunnions • The tang screw is not required as the T-Nut hardware will allow the adapter to remain sufficiently secure |
| AKM Stamped Fixed Stock* (RSA-AKM-NTR) | 3.5 OZ | • Does NOT require the removal of the stock tang* • Not compatible with 1.5MM stamped receivers (RPK) • Tang screw may not align properly on PSA AKM pattern trunnions or other trunnions that fall outside of the standard The tang screw is not required as the T-Nut hardware will allow the adapter to remain sufficiently secure |
| AK Pistols Most (RSA-AKP) | 1.2 OZ |
Bolt: M10x1.5 • Compatible with NAK-9 and Draco 9S. |
| Draco with Factory Sling Loop (RSA-AKP-V2) | 2.0 OZ | • Bottom lip prevents the adapter from rotating when installed • Not compatible with SAM7K-34 or Zastava M92/M85 (this requires RSA-YAKP) • Not compatible with 2021 and older Dracos without factory rear sling swivel trunnions. (this requires RSA-AKP) |
| AMD-65 (RSA-AMD) | 3.0 OZ | •This adapter replaces your factory stock with no permanent modifications and locks into the factory trunnion |
| AR-15 | M4** (RSA-AR) | 3.2 OZ | • Only compatible with AR style rifles that do not rely on a tradional buffer system to operate |
| GALIL AR | ARM | SAR (RSA-GALIL) | 1.3 OZ | • Not compatible with the Galil ACE or Galil MAR |
| MP5 Full Size (RSA-MP5) | 3.2 OZ | • May not be compatible with some SP5 models, due to tolerances • Not compatible with CNC Warrior 1913 stocks/braces |
| MP5K Compact (RSA-MP5K) | 2.8 OZ | • May not be compatible with some SP5K models, due to tolerances • Not compatible with CNC Warrior 1913 stocks/braces • Will not work with collapsible PDW style stocks or braces |
| MRKT Trunnion (RSA-MRKT) | 0.80 OZ | |
| SCAR 16 | 17 | 20 (RSA-SCAR) | 2.7 OZ | • Take note, inside the adapter, there may be 1-2 small bare lines. This is from the product being held and dipped during the anodizing process. This is not a blemish or defect |
| SAM-7-SF (RSA-SF) | 1.1 OZ | |
| M85 | M92 (RSA-YAKP) | 1.4 OZ | • Bolt: M8x1.25 • Drill size for tap: 6.9mm or 17/64” • Not compatible with factory pre-drilled rear trunnions |
| Zastava Fixed Stock Rifles (RSA-YFS) | 1.7 OZ | • Bolt: M8x1.25 |
| RPK | 5.1 |
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