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Bases and Mounts For Specific Rifle Models

Leapers UTG Pro 13 slot Picatinny Rail Mount base for Mossberg 500 shotguns - MTU029SG

Leapers UTG Pro 13 slot Picatinny Rail Mount base for Mossberg 500 shotguns - MTU029SG

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Leapers UTG Pro 13 slot Picatinny Rail Mount base for Mossberg 500 shotguns - part number MTU029SG

UTG Pro Picatinny Top Base Rail Mount for Mossberg 500 Shotguns. 5.5" (140mm) long with 13 weaver/picatinny top base slots for fitting scopes, dot sights and rear sights

Proudly designed and made in USA - enhanced precision, material strength and quality control, replaces MNT-MB500T

Precision machined from aircraft grade aluminum with matte black hard coat anodize

5.5" overall length with 13 picatinny rail slots for dot sights, rear sights, and flexible positioning of magnified optics for proper eye relief adjustment

Low profile see thru design allows use of front sight bead such as an Easyhit bead when scope or sights not fitted.

Contoured bottom perfectly fits Mossberg model 500 with drilled and tapped receiver

Includes assembly screws and tools for simple and friendly installation, no gunsmith required
  • Material: Aluminum
  • Weight: 1.2 oz (34g)
  • Rail Type: Fit Mossberg 500 to give 13 slot Picatinny/Weaver 20mm base top
  • Pieces: 1
  • Length: 5.5 inch (140mm)
  • Width: 0.36 inch (9mm)
  • Height: 0.83 inch (21mm)

The Picatinny base rail - what is it and how does if differ from a weaver base rail

Also known as a MIL-STD-1913 rail, Standardization Agreement 2324 rail, or tactical rail, is a bracket on some firearms that provides a standard mounting platform for accessories and attachments, similar to the Weaver rail mount.

The rail consists of a series of ridges with a T-shaped cross-section interspersed with flat "spacing slots." Accessories are mounted either by sliding them on from one end or the other; by means of a Picatinny/Weaver mount which is clamped to the rail with bolts, thumbscrews or levers; or onto the slots between the raised sections.

The Picatinny locking slot width is 0.206 in (5.23 mm). The spacing of slot centers is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm).

The only differences between the Picatinny rail and the similar Weaver rail are the size of these slots and the fact that they are standardized. Weaver rails have a slot width of 0.180 in (4.57 mm), but are not necessarily consistent in the spacing of slot centers.

Some accessories are designed to fit on both Weaver and Picatinny rails; but most Picatinny devices will not fit on older Weaver rails. As of May 2012, however, most mounting rails are cut to Picatinny standards, and many accessories come with the recoil pin cut to the Weaver-compatible diameter. Many rail-mounted accessories come with only a single recoil pin, avoiding the issue of differing slot spacing
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