Adapters, Rails, Hardware & Gear

Atlas® Bipod Clamps & Adapters

Atlas bipod clamps and adapters let you mount an Atlas to any rail standard: Picatinny, ARCA Swiss, M-LOK, sling stud, or Accuracy International. This is where you find the right clamp or adapter to fit your bipod to your rifle, including ARCA clamps for precision shooters and the BT81 adapter for hunters with sling studs. If you already own an Atlas and need to move it to a different rail system, the part you need is here. Everything is American-made and backed by a lifetime warranty.

BT19: Atlas® Accuracy International Spigot

The BT19 Atlas® Accuracy International Spigot (AAIS) is designed for use with any NC (No Clamp) style Atlas® Bipod that mounts directly to the AAIS which plugs into the Accuracy International AI/AICS stocks utilizing the factory retention/release mechanism. The evolution of long range shooting and shooter's demand drove subtle changes to the BT19. The latest modification stops the 3 to 9 rotation. It is machined from 6061-T6 aluminum that is Mil-Spec Type III hard anodized mated with an alloy steel Spigot that is finished with a Manganese Phosphate. Includes two (2) 10-32 x 1" flat head socket cap screws. Available in black only. Weight: 4.7 ounces

$79.95 Configure

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

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BT6569ML / BT6569ML-NC: Atlas® CAL Mount Upgrade

The BT6569ML and BT6569ML-NC are current production CAL mounts that provide 63 degrees of Cant. Additional Cant is considered an upgrade (see illustrations to determine which mount you have). The additional degrees of Cant was requested by a member of the SOF community and longtime user of B&T products. This also allows you to switch between the Two-Screw Clamp mount and the NC (No Clamp) mount in the event of changing capabilities or adapting to a different rail system. Variation differences and compatibility detailed in description below.

$34.95 Configure

BT70: Atlas® M-LOK® Adapter

The BT70 Atlas® M-LOK® Adapter is an interface between all Atlas® bipods with the “NC” designator in their names (BT10-NC, BT46-NC, BT47-NC, BT35-NC, BT65-NC, BT69-NC, BT72-NC) and M-LOK style mounting systems. It requires two (2) M-LOK standard sized slots for mounting. Machined from 6061-T6 aluminum and Type III hard coat anodized and comes with two 3/8 fasteners and two M-LOK nuts. Available in black only.

Length: 3.15"
Width: 1.11"
Weight: 1.1 oz

To install to a CAL or Super CAL Atlas® Bipod, see installation instructions here. For an M-LOK to Picatinny rail attachment, check out our BT73: M-LOK® Rail

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BT81: Lil’ Brandi Sling Stud to Picatinny Rail Adapter

The BT81 Lil’ Brandi is our long awaited answer to getting a Picatinny Rail mounted on a traditional rifle stock without taking the rifle apart, drilling holes or damaging the stock. Installation utilizes the existing sling stud and provided cross pin, set screw and hex wrench. It features 3 usable slots for attaching any rail mounted Atlas® Bipod and a sling attachment to utilize a sling if desired. The angular wings with rubber pads contact the stock. Machined to Picatinny rail standards from 7075-T6 aluminum with Mil-Spec Type III Class 2 finish. No disassembly required. Patent Pending. Not intended for use with flat stocks (reference fourth and fifth image). If the stock has two sling studs, we strongly recommend using our BT15 or BT17

Dimensions: 1.95 x 1.5 x 0.663 in
Weight: 0.89 ounces

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ADM-170-S: Atlas® Accessory

The ADM-170-S base is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock™ Lever system to accommodate both in spec and out of spec rail systems. It has two hole pattern of 1.100”. This lever is manufactured by American Defense MFG, LLC NOT by B&T Industries, LLC and is used on our V8, PSR, CAL and Super CAL models of Atlas® Bipods. All warranty issues are to be processed through American Defense MFG, LLC Includes two (2) 10-32 x 3/8″ flathead socket cap screws. Weight: 1.905 ounces

$93.60 Configure

BT43: Leveraged Rail

The BT43 Leveraged Rail is a BT20-B and an American Defense ADM-170-S lever as a complete assembly. It provides the means to quickly attach/detach any rail attached accessory to include our Atlas® Bipods and Precision Rail Monopods. The BT20-B is machined to Picatinny rail standards from 6061-T6 aluminum with Mil-Spec Type III Class 2 finish. Available in black only.

Length: 1.6"
Bottom of rail to bottom of BT20-B rail: 0.58"
Weight: 2.5 ounces

$128.55 View Product

ADM-5-H Lever

The ADM-5-H Lever base is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock™ Lever system to accommodate both in spec and out of spec rail systems. It has two hole pattern of 1.100”. This lever is manufactured by American Defense Manufacturing and NOT by B&T Industries L.L.C. This custom made lever is made to work with the 5-H Atlas® Bipod for clearance of the cradle design. Includes two (2) 10-32 x 3/8″ flathead socket cap screws. Weight: 1.89 ounces

$103.60 Configure

ADM QD Bipod Mount for ARCA Swiss Rail

The ADM QD Bipod Mount for ARCA Swiss Rail, "is designed to adapt to the ARCA-Swiss rail platform and enables you to attach a B&T Atlas® Bipod to your ARCA railed forearm. This mount is only available with a standard lever. The special short throw lever design on this mount allows it to be loosened enough to slide the bipod to any position on the ARCA Rail while still retaining the mount to the rail. Designed to fit 38mm ARCA rails, but is adjustable to fit larger widths such as 40mm also." - American Defense MFG, LLC It can be attached by unlocking the QD lever and directly affixed to the desired position by pivoting or rocking the mount onto the ARCA rail ("drop free"). This is opposed to having to slide onto an ARCA rail at one end. It will bolt directly to any “NC” (No Clamp) style of Atlas® Bipods (except the 5-H which requires Extension Spigot for compatibility). Compatible Atlas® Bipod models listed below. It will also bolt directly to our BT20-B Bottom Picatinny Rail and BT56LD 1/4-20 Lever Adapter. This clamp is manufactured by American Defense MFG, LLC NOT by B&T Industries L.L.C. All warranty issues are to be processed through American Defense. Includes two (2) 10-32 x 3/8″ flathead socket cap screws.

$119.54 View Product

Area 419 ARCALOCK Clamp

"Area 419 is always looking for ways to improve existing products when we are not developing new technologies. With the rapid growth in popularity of ARCA rails in precision rifle, we saw a need to improve this great dovetail technology to something that could be mechanically locked in place instead of just friction. If you have ever tried using a Barricade stop on an existing ARCA rail, you’ve probably also seen it slide under much pressure. Introducing the ARCALOCK Dovetail Rail System." - Area 419 The ARCALOCK Clamp works on all standard ARCA/1.5" dovetail rails. It will bolt directly to any "NC" (No Clamp) style of Atlas® Bipods (except the 5-H which requires Extension Spigot for compatibility). Compatible Atlas® Bipod models listed below. It will also bolt directly to our BT20-B Bottom Picatinny Rail and BT56LD 1/4-20 Lever Adapter. The ARCALOCK Clamp features a proprietary two-stage screw design. Both the Clamp and Knob are machined from 6061-T6 Aluminum with Type III Hardcoat black anodized Clamp and Knob. The screw is turned from 303 stainless steel. This clamp is manufactured by Area 419 NOT by B&T Industries L.L.C. All warranty issues are to be processed through Area 419. NO HARDWARE INCLUDED.

Weight: 2.5 oz

$85.00 View Product

Find the clamp or adapter for your rail

Match the part to the interface on your rifle. Each links to the mounting guide if you want step-by-step help.

ARCA Swiss: The ADM QD ARCA mount, the RRS SOAR BTC-Pro, and the Area 419 ArcaLock clamps let an Atlas slide and lock on an ARCA dovetail.
Picatinny: Standard Atlas clamps and the ADM-170-S quick-detach lever for tool-free mounting and removal.
M-LOK: The BT70 adapter mounts a standard Atlas to an M-LOK handguard.
Sling stud: The BT81 Lil Brandi converts a front sling stud to a Picatinny rail.
Accuracy International: The BT19 AI spigot and BT29 Sako TRG kit fit AI and Sako rifles.

Dual-standard clamps for shooters who run both

If you move a bipod between a Picatinny rifle and an ARCA chassis, a dual-standard clamp saves you from buying two bipods. The RRS SOAR BTC-Pro and the Area 419 ArcaLock dual clamp accept both Picatinny and ARCA, so one Atlas serves your whole safe. For pure ARCA setups, a dedicated ARCA clamp keeps the profile clean and the lockup fast.

Quick-detach options

If you mount and remove your bipod often, choose a quick-detach clamp. The ADM-170-S lever lets you attach and remove an Atlas from a Picatinny rail by hand in seconds, with no tools, and the ARCA clamps offer the same fast lock-and-release on a dovetail. Quick-detach is ideal for hunters who stow the bipod while hiking and for competitors who reconfigure between stages.

Already own a Harris or other bipod?

If you want to move a Harris-style or other competitor bipod onto an ARCA chassis, it helps to know how the interfaces differ. B&T's ARCA clamps (ADM QD ARCA, Area 419 ArcaLock, RRS SOAR BTC-Pro) are built for the Atlas cradle, so the cleanest ARCA setup is an Atlas paired with one of these clamps. If you would rather keep your current rail-clamp bipod and just add a mounting surface, the BT81 converts a sling stud to Picatinny and the BT70 puts an Atlas on M-LOK. When you are ready to upgrade, the Atlas-on-ARCA path delivers the slide-to-balance and fast lockup a sling-stud bipod cannot.

Shopping Atlas Bipod Clamps and Adapters? The questions below cover what fits your rifle, where it is made, and what is in this collection, so you can match the right option to your rifle.

Frequently Asked Questions

What clamp do I need for an Atlas bipod on ARCA?

Use an ARCA clamp such as the ADM QD ARCA mount, the RRS SOAR BTC-Pro, or the Area 419 ArcaLock. Each replaces the standard Picatinny clamp and grips the ARCA dovetail so the Atlas slides for balance and locks down.

Can I mount an Atlas on both Picatinny and ARCA?

Yes, with a dual-standard clamp like the RRS SOAR BTC-Pro or the Area 419 ArcaLock dual clamp, which accept both interfaces. That lets one Atlas move between a Picatinny rifle and an ARCA chassis.

How do I mount an Atlas to a sling-stud rifle?

Use the BT81 Lil Brandi adapter. It attaches to the front sling stud and adds a Picatinny rail, so any Atlas clamps on with no gunsmith. It is the standard solution for hunting and bolt rifles.

What is the ADM-170-S lever?

The ADM-170-S is a quick-detach lever that locks an Atlas to a Picatinny rail and lets you mount or remove it by hand in seconds, with no tools. Atlas LW17 models ship with it; you can also add it to a clamp.

Do you have an M-LOK adapter for the Atlas?

Yes. The BT70 adapter mounts into M-LOK slots and lets a standard Atlas bipod attach to an M-LOK handguard. If you prefer, a direct-mount Atlas M-LOK bipod skips the adapter entirely.

Are these clamps and adapters made in the USA?

The B&T components (BT70, BT81, BT19, BT29, ADM-170-S) are machined in the USA and backed by a lifetime warranty. Partner clamps such as the RRS SOAR and Area 419 ArcaLock are made by their respective US manufacturers.

Get the right mount

Know your rail? Shop the clamp or adapter that matches your rifle above, or read the bipod mounting guides if you want step-by-step help. Not sure what you have, reach out to our team in Kansas and we will confirm the fit.