Long Shot Precision, Adjustable Bag Rider (ABR) PRS for Magpul PRS Gen 3

$419.95$569.95 inc. GST

The Adjustable Bag Rider (ABR) is made and assembled in the USA. Made out of the highest quality American aluminum, CNC made and anodized for superior wear resistance, the ABR is made to last and weighs less than a pound (most models). The custom dowels come in either hardened alloy steel or Stainless Steel and ride in linear bearings for consistent smooth operation. A custom-designed SS thumb wheel rides in two Delrin thrust washers that are known for their strength and creep resistance, this adjusts the height of the stock without the shooter having to take his or her eyes off the site picture. The ABR replaces the need for expensive, heavy, and bulky adjustable front rests and wobbly monopods. Installation is simple, quick, and you never need to remove it.

Say goodbye to the mound of the expensive and heavy equipment you take to the range. Whether you plan to go to the bench or want to take a shot in the field you are guaranteed to have previously unattainable stability and micro-adjustment with you at all times!


The Patented ABR was designed to fit the – Magpul PRS3 and to mount directly to the stock with supplied bracket and bolts. A ‘15 degree’ or ‘vertical grip’ is required as 2”+ clearance is needed between the rear of grip and the front of the ABR (see pic with yellow ruler) . The LONGER of the two tube spacer should be used which increases the LOP.

The bottom section is available in two variants: V Bottom, or ELR

The V bottom base is designed to fit the standard 3/8” stitch bag (2 stitch) you may already have (ABR lower measures 0.375″ at the lowest/thinnest point).  ELR Bottom is designed to fit a bag you may have if you already purchased one for your chassis and is 0.5″ tall, they are made for Protektor branded ELR bags or other bags with very low ears (ABR lower measures 0.850″ wide).  Functionality and construction are the same but the difference resides in how the shooter chooses to use it. The ELR bottom has a wider base for competitive shooting in which a rear bag is not permitted.

Hardened or Standard Dowels:

  • .338 and smaller calibers will use the Standard Dowels

  • .33XC and larger needs the Hardened Dowels

NOTES: Do NOT lower the rider past the dowels being level with the top of the ABR. This product does not fit any other Magpul stocks. 

There is a separate “PRS3 Installation” Instructions page on the Long Shot Precision (LSP) website that fully explains the installation process and maintenance.

ATP is an authorised Australian dealer for Long Shot Precision. All Long Shot Precision products bought from ATP are covered by the Australian Long Shot Precision Warranty.

Weight 0.501 kg

Short Dowels – ELR Bottom, Short Dowels – V Bottom

Dowel Type

Hardened, Standard


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