The Atlas BT49 2.05 Inch Adjustable Rail, part number BT49 from B&T Industries, is a radius-back MIL-STD-1913 Picatinny rail, 2.05 inches (52 mm) long, with slotted holes covering centre-to-centre spacings of 1.2 to 1.6 inches (30–41 mm). It is the flexible option when a stock's existing holes do not match a fixed rail.
How It Compares
The slotted holes are what separate the BT49 from the fixed Atlas BT34 2.05 inch 1913 rail, which is made for a 1.6 inch (41 mm) spacing only. For longer rails, the Atlas BT15 3.35 inch radius-back rail and the Atlas BT17 4 inch flat-back rail cover wider spacings. On a free float tube, use the Atlas BT33 tube rail kit. More in our bipod accessories.
Ideal For
- Stocks whose hole spacing does not match a fixed rail
- Short forends where a full-length rail will not fit
- Deer stalking and target rifles being converted to bipod mounting
- Gunsmiths fitting rails across a range of different stocks
Key Features
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Type: MIL-STD-1913 Picatinny rail, adjustable, radius back
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Length: 2.05 inches (52 mm)
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Hole spacing: 1.2 to 1.6 inches (30–41 mm), slotted
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Back profile: Radiused, for rounded forends
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Fixed alternative: The BT34 is the same length with fixed 1.6 inch (41 mm) holes
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Origin: Genuine B&T Industries, LLC — Made in USA
Technical Specifications
| Type |
1913 Picatinny rail, adjustable, radius back |
| Length |
2.05 inches (52 mm) |
| Hole Spacing |
1.2 to 1.6 inches (30–41 mm), slotted |
| Brand |
B&T Industries, LLC — Made in USA |
| SKU / MPN / UPC |
BT49 / BT49 / 810040220357 |
What's Included
- 1× Atlas BT49 2.05 inch (52 mm) adjustable rail
UK Delivery & Support
This Atlas rail is imported from the USA, duty paid by us, and dispatched tracked from the UK — nothing to pay on delivery — and is backed by UK-based aftersales support.
Frequently Asked Questions
What hole spacing does the Atlas BT49 rail cover?
The BT49 has slotted holes covering centre-to-centre spacings of 1.2 to 1.6 inches (30–41 mm), so it suits stocks that do not match a fixed-hole rail.
How long is the Atlas BT49 rail?
The BT49 is 2.05 inches (52 mm) long, the same length as the fixed-hole BT34.
What is the difference between the Atlas BT49 and the BT34?
Both are 2.05 inch (52 mm) radius-back rails, and the BT49 has slotted holes covering 1.2 to 1.6 inches (30–41 mm) while the BT34 has fixed holes at approximately 1.6 inches (41 mm).
Which bipods will mount to the Atlas BT49?
Any bipod or monopod with a MIL-STD-1913 Picatinny interface will mount to it, including two-screw and ADM lever Atlas bipods.
What is in the box?
The box contains one Atlas BT49 2.05 inch (52 mm) adjustable rail.
