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Leapers, Inc. - UTG UTG PRO
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Leapers, Inc. - UTG

UTG PRO

$69.97
$59.97
Sale Price
Available California compliant

Leapers, Inc. - UTG UTG PRO, Mil-spec Stock Kit, Black Finish, Fits AR-15, Compact Size, Includes Cheek Rest Plus Removable Extended Cheek Rest Insert, Rubberized Butt Pad, Mil-spec Extension Tube, Buffer, Buffer Spring, Receiver End Plate and Castle Nut, Black RBUS4BM

Key Details
Brand Leapers, Inc. - UTG
Manufacturer Part Number RBUS4BM
UPC 4717385552678
SKU UTGRBUS4BM
Current Stock 36 available
Quantity Updated Apr 23, 2026 9:05 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

This is a UTG PRO AR-15 Ops Ready S4 Mil-spec Stock Kit molded from impact resistant high strength matte black polymer. It is complete with Mil-spec extension tube, buffer, buffer spring, receiver end plate, and castle nut. Its unique 4.28" length with 4 position adjustability provides comfortable length of pull and ease of shouldering firearm when wearing a load bearing vest or plate carrier system. It is built for heavy duty use with the tightest tolerance controls to provide the most secure fit and function.

Features
  • Black finish
  • Ops ready S4
  • Mil-spec stock kit
  • Compact
  • Includes extension tube, buffer, buffer spring, receiver end plate & castle nut
  • Fits AR-15
Specifications
UPC: 4717385552678
Manufacturer: Leapers, Inc. - UTG
Manufacturer Part #: RBUS4BM
Model: UTG PRO
Size: Compact
Type: Stock