Area 419 Arcalock 14.25'' Universal Weight-Tunable Rail W/T 5 Weights
$185.00
The Area 419 Arcalock 14.25" Universal Weight-Tunable Rail with 5 Weights is a mechanical locking rail system built for precision rifle stocks that demand tunable weight and repeatable attachment. Unlike friction-based ARCA rails, the Arcalock uses a lock mechanism to hold your rifle secure in place—no creep, no slop. This rail was purpose-built for the Manners TCS stock platform and is engineered to fit approximately 98% of Manners PRS1, PRS1 T2A, T2A GAP, T4A, T4A TEAM, and T5A stocks, making it a genuine drop-in for most modern precision builds.
Weight tuning is the real story here. The bare rail weighs just over 6 ounces, and you get five brass weights (3.5 oz each) to dial in your rifle's balance and recoil behavior without adding or removing hardware. With all weights installed, the rail reaches approximately 23.6 ounces. This modular approach lets you fine-tune your rifle's handling for everything from prone matches to field hunting without buying a new chassis or chassis weights. The .400" thickness (thicker than Area 419's standard .270" rails) provides a solid, stable platform.
Built and finished for durability: the rail is black hardcoat anodized while the weights ship in raw brass. The system includes t-nut hardware to add attachment points if your stock's factory holes don't align with the mounting slots. The rail also works with M-LOK systems, though M-LOK hardware is sold separately. This is the right choice if you're running a Manners stock and want mechanical locking plus the flexibility to adjust weight on the fly.
Key Features
- Mechanical lock system for secure, repeatable attachment—no friction-based hold
- Five 3.5 oz brass weights included for tunable weight adjustment
- Fits approximately 98% of Manners PRS-series stocks
- .400" thickness for solid, stable platform
- Black hardcoat anodized finish on rail, raw brass weights
- Includes t-nut hardware for custom attachment points
- M-LOK compatible (hardware sold separately)
Specifications
| Length | 14.25" |
| Rail Thickness | .400" |
| Bare Rail Weight | Just over 6 oz |
| Individual Weight (each) | 3.5 oz |
| Number of Weights Included | 5 |
| Total Weight (all weights installed) | Approximately 23.6 oz |
| Finish | Black hardcoat anodized (rail); raw brass (weights) |
Frequently Asked Questions
Will this Arcalock rail fit my Manners stock?
Area 419 designed this 14.25" Universal rail to fit approximately 98% of Manners PRS1, PRS1 T2A, T2A GAP, T4A, T4A TEAM, and T5A stocks. If you're unsure about your specific stock, you can cross-reference the hole spacing print with your stock's attachment points. The kit includes t-nut hardware to add custom attachment points if your factory holes don't align with the rail's slots.
How much weight can I add or remove with this system?
The rail comes with five brass weights, each weighing 3.5 ounces. You can run the rail bare at just over 6 ounces, or add any combination of the five weights to reach your desired total—up to approximately 23.6 ounces with all weights installed. This lets you tune your rifle's balance and recoil impulse without buying a new chassis or weight kit.
Can I use this with M-LOK attachments?
Yes, the rail is M-LOK compatible. However, M-LOK hardware is not included and must be purchased separately.
What's the difference between this rail and Area 419's other Arcalock rails?
This 14.25" Universal rail is .400" thick—noticeably thicker than Area 419's standard 14", 12", and 10" Arcalock rails, which are .270" thick. The extra thickness provides added stiffness and is tuned for the weight-equipped platform on Manners TCS stocks.
