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Leapers, Inc. - UTG Model 4
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

Model 4

$64.97
$54.97
Sale Price
Available California compliant

Leapers, Inc. - UTG Model 4, 6-Position Mil-Spec Stock Assembly w/ Buffer, Buffer Tube, & Spring, Black RBU6BM

Key Details
Brand Leapers, Inc. - UTG
Manufacturer Part Number RBU6BM
UPC 4712274528277
SKU UTGRBU6BM
Current Stock 207 available
Quantity Updated Apr 23, 2026 1:00 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

The Leapers UTG PRO Model 4 MIL-SPEC 6-position collapsible AR-15 stock kit is precision machined to tight tolerances. The aluminum receiver extension provides shooters with six different lengths that allow you adjust your rifle for your body type-helping increase your weapon control, reaction time and accuracy. The high quality buffer tube-to-stock fitment ensures there is minimal wobble so that every time you mount your rifle you get a solid cheek weld. This Leapers stock assembly kit comes complete with a polymer stock, aluminum receiver extension, castle nut, locking plate, action spring and carbine buffer. Pick up a quality armorer's wrench and you will have everything you need to either convert your rifle from a fixed stock or install this collapsible stock on a new build.

Features
  • Black finish
  • 6-position collapsible stock w/action spring buffer assembly" tear-drop ring & castle nut"
  • Mil-spec diameter
  • Fits AR-15 pattern rifles
Specifications
UPC: 4712274528277
Manufacturer: Leapers, Inc. - UTG
Manufacturer Part #: RBU6BM
Model: Model 4
Type: Stock