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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

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

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

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

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

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

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

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

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

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

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

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.