Area 419 ARCALOCK 14" Flat MasterPiece Arms BA Chassis Rail
- ARCALOCK serrated interface ensures a true mechanical lock with zero movement
- Flat-profile 14" rail ideal for MPA BA setups and other compatible rifle platforms
- Backwards compatible with standard ARCA accessories (locking requires ARCALOCK clamp)
- Smooth, non-abrasive serrations that won’t damage shooting bags or hands
- Versatile universal fit, designed to accommodate various rifle and stock configurations
- Up to four mounting points for exceptional rigidity and stability
The Area 419 ARCALOCK 14" Flat MPA BA Rail delivers a major upgrade to traditional ARCA dovetail systems by introducing a true mechanical locking interface rather than relying on friction alone. Built for demanding precision rifle shooters, the ARCALOCK system prevents accessory drift even under heavy pressure, ensuring absolute stability on barricades and positional shooting platforms. Featuring smooth, non-abrasive serrations designed to work seamlessly with the proprietary ARCALOCK clamp, this rail offers a secure, repeatable, and fully controlled interface. The low-profile flat design is ideal for MPA and similar chassis while remaining highly adaptable to a wide range of rifle configurations. Made in the USA from high-grade aluminium and engineered for both strength and versatility, this rail is an essential upgrade for shooters seeking enhanced reliability, precision, and confidence in every shot.
– Serrated rail sides interface with our proprietary clamp design to mechanically lock it in place so no movement is possible. Serrations are not sharp, will not damage bags or your hands.
– Rail is backwards compatible with standard Arca accessories, but will not be locking without our clamp
– Rail is 14″ long giving you the entire length of the stock forend for attachments. The best part is, it still only weighs in at a paltry 4.1oz
– 65 Engraved positions for the clamp to lock into
– Fits the MPA BA and BA Comp chassis at a minimum, may also fit the Hybrid but we cannot say 100% yet. **Will not fit Lite**
– Spigot supports front of rail, but rail will work even if you do not have the MPA spigot, you may just see a small amount of flex with bipod fully forward
– Access to recoil lug wedge is not obstructed
– Made to the RRS 1.5″ Dovetail Standard, so you can be sure lever clamps will work
– No sharp edges. Every corner is radiused, and every edge is chamfered on the machine. This takes longer to make, but it is the only right way.
– Type 3 Hard Coat anodized for additional durability.
– Made from 6061-T6 Aluminum
– Made in-house here in the USA from USA sourced Aluminum on USA made CNCs
– Rail comes with all necessary hardware
- Rail Length 14"
- Colour Black
- Material Aluminium
- Gun Type Rifle
- Gun Model Universal
- Mounting Points Up to 4
- Country of Origin USA
- Serrated rail sides engage the proprietary ARCALOCK clamp to create a firm mechanical lock
- Non-sharp serrations, ensuring comfort and preventing damage to shooting bags
- Backwards compatible with standard ARCA accessories when locking is not required
- Designed for Manners Composite Stocks, yet adaptable to a broad range of rifles
- Accommodates multiple stock layouts with a front action screw or other mounting locations
- Up to four attachment points for excellent strength and stability on the rifle
- Flat-profile 14-inch layout ideal for MPA BA and similar rifle chassis
- Durable aluminium construction for longevity without additional weight
- Precision-machined edges with smooth finishing for safe, snag-free handling
- Suitable for ambidextrous use, making it accessible for both left- and right-handed shooters
- Made in the USA with premium materials and exacting machining standards
- ARCALOCK 14" Flat MPA BA Rail
Tactical Scope Shipping Policy
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY – READ MORE: HERE
Note: The above DPD link is to our group partner site Optics Warehouse, with whom we share logistics and stock. Link opens in a new window.
Couriers
We use DPD, Royal Mail, TNT, and UPS courier services for all our UK and international orders. Once your order is dispatched, you will receive an email with your unique tracking number.
In-Store Items
These are items we have in stock and aim to dispatch within 1–2 working days. During busy periods, this may be delayed slightly. If you'd prefer to collect your item in person, please contact us in advance to arrange. Collection orders must be paid for beforehand.
Pre-Order Items
Pre-order items are typically out-of-stock or in limited supply. Purchasing a pre-order secures your item, and it will be dispatched within 24 hours of restock where possible. Check the product page for estimated restock dates. These dates may change, so staying in touch is advised.
International Delivery & Taxes
If your shipping address is outside the UK, you may incur import duties or taxes upon arrival in your country. These charges are your responsibility. Customs regulations vary, so please check with your local customs office. Some packages may be opened for inspection.
Need Help?
If you need assistance, call us at +44 (0)1803 611895 (Optics Warehouse) or email [email protected].
DPD Shipments & PIN Code Delivery
We have now introduced DPD Pin Code verification for all orders shipped via DPD. You will receive a PIN via email and text.
A valid email and mobile number must be provided at checkout. Emails will come from Riviera House 3PL. Please check spam/junk folders if not received.
Failure to present your PIN to the delivery driver will result in a failed delivery and rescheduling may be required.