Adapters, Rails, Hardware & Gear

Picatinny Rails

If your rifle does not have a rail where you need to mount an Atlas, these Picatinny rails add one. B&T offers short forend rail sections, an adjustable rail, and the BT81 sling-stud adapter, so you can give almost any rifle a clean Picatinny mounting point for a bipod or monopod. This page helps you pick the right rail for your forend, your stud, or your length needs. Everything is American-made and backed by a lifetime warranty.

New to rails? A Picatinny rail (the MIL-STD-1913 slotted standard) is the mounting platform that gives a bipod, monopod, or accessory a place to clamp onto your rifle. For the full standard-by-standard breakdown of what a Picatinny rail is and how it compares to M-LOK and Weaver, see our explainer. Below, pick the B&T rail, mount, or accessory that fits your setup.

BT15: 3.35″ Picatinny Rail

The BT15 - 3.35" Picatinny Rail will accommodate hole patterns with a center to center spacing of 1.76 – 2.78" and a relieved back to accommodate curved surfaces. It also has a flush cup allowing the use of Flush Cup sling swivels and sling studs (neither provided). A standard sling stud and sling stud spacer can be used as one fastener or two button head machine screws can be used. NO HARDWARE INCLUDED. See BT1517 to attach this rail to the forearm of standard rifle stocks. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only. Weight: 0.92 ounces

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BT17: 4″ Picatinny Rail

The BT17 - 4" Picatinny Rail will accommodate hole patterns with a center to center spacing of 2.2 – 3.5" with a FLAT back to accommodate flat surfaces. It also has a flush cup allowing the use of Flush Cup sling swivels and sling studs (neither provided). A standard sling stud and sling stud spacer or two button head machine screws can be used as a fastener. NO HARDWARE INCLUDED. See BT1517 to attach this rail to the forearm of standard rifle stocks. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only. Weight: 1.20 ounces

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BT1517: Rail Mounting Fastener Set

The BT1517 Rail Mounting Fastener Set is used for mounting rails and consists of two (2) 10-32 T-Nuts and two (2) 10-32 x ¾" Button Head Cap Screws. Sold as a pair. These T-nuts are commonly used by stock builders to accommodate the installation of sling studs and rails. They are typically bedded into the stock from the barrel channel side as illustrated in the third image. Weight: 0.4 ounces

$6.95 View Product

BT28: AFAR Rail Kit

The BT28 AFAR Rail Kit will mount onto Freeland and Anschutz style accessory rails to provide a low profile Picitinny rail for attaching the Atlas® Bipods or other accessories. This is a great option for shooters that have accessory rails and want to use their rail mounted Atlas® Bipod on several rifles. The uniquely designed rectangle nuts (BT28-N) fit both Freeland and Anschutz style rails by rotating them 90°. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish with 4041 Alloy Steel fasteners. Includes two rectangle nuts, two (2) 10-32 x 3/8" flat head socket cap screws and two (2) 10-32 x 1/2" flat head socket cap screws. Available in black only.

Length: 2.05"
Weight: 0.89 ounces

$39.95 Configure

BT28-N: AFAR Rail Nuts

The BT28-N AFAR Rail Nuts are the same nuts used with the BT28 AFAR Rail Kit. They are 4041 Alloy Steel fasteners. The uniquely designed rectangle nuts fit both Freeland and Anschutz style rails by rotating them 90°. Sold as a pair. Weight: 0.22 ounces

$12.95 View Product

RNK: Rail Nut Kit – Anschutz Only

The RNK Rail Nut Kit will mount onto Anschutz style accessory rails ONLY. It provides a low profile Picitinny rail for attaching the Atlas® Bipods or other accessories. This is a great option for shooters that have accessory rails and want to use their rail mounted Atlas® Bipod on several rifles. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish with 4041 Alloy Steel fasteners. Includes two rail nuts, two (2) 10-32 x 3/8" flat head socket cap screws and two (2) 10-32 x 1/2" flat head socket cap screws. Available in black only.

Length: 2.05"
Weight: 0.89 ounces

$39.95 View Product

RN: Rail Nuts – Anschutz Only

The RN: Rail Nuts fit the Anschutz style accessory rails ONLY. They are the same nuts used with the RNK: Rail Nut Kit. These fasteners are machined from 4041 Alloy Steel with a manganese phosphate. Sold as a pair. Weight: 0.22 ounces

$12.95 View Product

BT33: Tube Rail Kit

The BT33 Tube Rail Kit consists of a Steel Bar Nut, designed to fit inside free float tubes, and a low profile Picatinny rail 2.05" long with a 1.00" radius back and a center-to-center spacing of 1.602 between the holes. The BT33 is installed with the Steel Bar Nut inside the free float tube and the Picatinny rail on the outside with the matching holes aligned. Fastened together, they allow the attaching of the Atlas® Bipod or other accessories to free float tubes. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Manganese phosphate finish on the steel bar nut. Hardware included. Available in black only.

Length: 2.05"
Weight: 1.3 ounces

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BT34: 2.05″ Picatinny Rail

The BT34 - 2.05" Picatinny Rail has a center to center spacing of 1.6". Two machine screws can be used not included, see BT1517) to attach this rail to the forearm of standard rifle stocks. It can also be attached to a horizontal surface on the Butt section to attach our Precision Rail Monopods. Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. NO HARDWARE INCLUDED. Available in black only. Weight: 0.4 ounces

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BT20: Atlas® Accuracy International Spigot Rail Set

The BT20 Atlas® Accuracy International Spigot (AAIS) Rail Set consists of three pieces of rail that can be attached to the BT19 AAIS on the bottom and both sides. This accommodates for a multitude of options including the mounting of any rail mounted Atlas® Bipod. For the bottom rail only, check out our BT20-B. Each rail is machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only. Includes four (4) 10-32 x 5/8" flat head socket cap screws.

Length: 1.6" each
Weight: 2.2 ounces

$59.95 Configure

BT20-B: Atlas® Accuracy International Spigot Bottom Rail PLUS

The BT20-B Atlas® Accuracy International Spigot Bottom Rail is the same rail found in the BT20, but consists of the bottom rail ONLY. It features two blind threaded 10/32 holes and center-to-center hole spacing of 1.100" Machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only. NO HARDWARE INCLUDED. 10-32 x 3/8" Flathead Socket Screws available separately.

Length: 1.60"
Weight: 0.57 ounces

The BT20-B PLUS options consist of the BT20-B Bottom Rail PLUS your choice of various mounting options as detailed below. This allows use of the quick detach lever on our “LW17” style of Atlas® Bipods OR the 2-screw mount style of Atlas® Bipods, while adapting to attachment of choice. Any BT20-B PLUS option selected will be sent as a completed unit using appropriate hardware and Loctite® 243

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BT21: Atlas® TRG Bracket

The BT21 Atlas® TRG Bracket (ATB) is designed for use with the Sako TRG line of rifles that utilize the TRG bipod attachment slot with 0.42" hole spacing. The ATB provides a forward mounting position which is also closer to the bore-line. It is designed for use with either the 2-screw clamp (BT10, BT65, BT69, BT72) or quick detach lever (indicated by "LW17") models of Atlas® Bipods, which would mount directly to the Picatinny Rail portion of the ATB. Although the No Clamp (NC) models can be mounted onto the ATB, it requires installation of the bipod during the installations of the ATB prior to reassembly of stock. THIS RESULTS IN A SEMI-PERMANENT, DEDICATION OF THE BIPOD TO THAT PARTICULAR RIFLE. The ATB is constructed from 6061-T6 Aluminum with a Type III hard anodized finish and heat treated alloy steel with a Manganese Phosphate finish. Available in black only. Fasteners included: two (2) M5 - .8 x 10” flat head socket cap screws, two (2) 10-32 x 3/4” flat head socket cap screws and two (2) 10-32 x 5/8” flat head socket cap screws

Length: 3.83"
Weight: 5.03 ounces

Configure

Which rail do you need?

Match the rail to how your rifle is built. Most setups fall into one of these.

Forend with mounting holes: A fixed Picatinny rail section such as the BT15 (3.35 inch) or BT17 (4 inch) bolts to the existing holes.
Sling-stud rifle: The BT81 Lil Brandi converts a front sling stud to a short Picatinny rail, no gunsmith needed.
Need fore-aft adjustment: The BT49 adjustable rail lets you fine-tune the bipod's position for balance and loading.
Specialty interfaces: AI, Sako, and similar rifles use dedicated rail kits (BT20 AAIS, BT29 Sako TRG).

Picking the right length

Rail length affects where the bipod sits and how it balances the rifle. A 3.35 inch BT15 keeps things compact for lighter setups, while a 4 inch BT17 gives more mounting room and fore-aft flexibility. Choose the length that lets you position the clamp where you naturally load the bipod, clear of your support hand. If you are unsure, the mounting guide shows how to measure and where to mount.

To weigh length, weight, and fit across every bipod rail side by side, see the Atlas bipod rail comparison.

Rails for monopods and rear mounting

Picatinny rails are not just for the front. A rear rail on the buttstock or chassis gives an Accu-Shot Precision Rail Monopod a place to mount, so you can add rear elevation control to a rifle that did not come with a rear rail. If your stock has a rear sling stud instead, a stud-mount monopod skips the rail entirely.

Rear-mount rail kits are compared side by side in the Accu-Shot monopod rail comparison.

Shopping Picatinny Rails? The questions below cover what fits your rifle, where it is made, and what it does, so you can match the right option to your rifle.

Frequently Asked Questions

What Picatinny rail do I need for a bipod?

If your forend has mounting holes, a fixed rail like the BT15 (3.35 inch) or BT17 (4 inch) bolts on. If your rifle has only a sling stud, the BT81 Lil Brandi converts it to a rail. Choose based on your forend and length needs.

How do I add a Picatinny rail to a rifle without one?

Attach a B&T rail section to your forend's existing holes, or use the BT81 adapter to convert a front sling stud to a rail. Both are hand-tool installs with no gunsmith required. The mounting guide walks through it.

What length Picatinny rail should I get?

A 3.35 inch BT15 is compact for lighter setups; a 4 inch BT17 gives more mounting room and fore-aft flexibility. Pick the length that positions the bipod clamp where you naturally load it, clear of your support hand.

What is an adjustable Picatinny rail?

The BT49 adjustable rail lets you fine-tune the bipod's fore-aft position so you can balance the rifle and load the bipod consistently. It is useful when a fixed rail does not put the clamp exactly where you want it.

Can I mount a monopod on a Picatinny rail?

Yes. A rear Picatinny rail on the buttstock or chassis gives an Accu-Shot Precision Rail Monopod a mounting point for rear elevation control. If your stock has a rear sling stud instead, use a stud-mount monopod.

Are these rails made in the USA?

Yes. B&T Picatinny rails and the BT81 adapter are machined in the USA and backed by a lifetime warranty, the same as the rest of the Atlas and Accu-Shot line.

Add your rail

Need a mounting point? Shop the rail or adapter that fits your rifle above, or read the mounting guide if you want help measuring and positioning. Not sure what you need, reach out to our team in Kansas.