Buffer Upgrade Kit for Lima Six

The Lima Six Belt-Fed Upper Receiver will not function with a standard AR-15 buffer setup. Choose between the standard H3 buffer or the Tromix H3 buffer. Both upgrade kit options include everything needed to configure your buffer system for reliable, optimal performance with the Lima Six.

Price range: $89.99 through $149.99

The Lima Six belt fed upper receiver WILL NOT FUNCTION with a standard AR15 buffer setup. This is because the Lima Six has a stretched upper receiver, which requires more room in the buffer tube to cycle. There are two options for buffer configurations that work:

  1. A shorter buffer (AR10 length, 2.5″ long) in a standard 7″ carbine length tube (SEMI AUTO ONLY)
  2. A standard buffer (AR15 length, 3.125″ long) in a longer A5 7.75″ length tube (required for full auto)

This upgrade kit contains what you need for OPTION 2. It includes an A5 buffer tube, H3 buffer, and Sprinco Orange spring.

These are commercially available parts that can either be purchased from us, or sourced anywhere else. We are simply offering these items for convenience.

Additional information

Weight1 lbs
Dimensions12 × 3 × 3 in

Additional information

Weight 1 lbs
Dimensions 12 × 3 × 3 in
Buffer Weight

Standard H3, Tromix H3

UPPER / BUILD KIT ADDED TO CART

Complete your buffer setup.

Option A · Keep your carbine tube

Tromix Buffer for LIMA SIX

Tromix Buffer

$84.99

  • Requires a standard 7-inch carbine buffer tube.
  • Compatible with FRTs and Full Auto.
  • No gunsmithing.
Product details ↗

Option B · Replace your buffer system

LIMA SIX Buffer Upgrade Kit

Buffer Upgrade Kit

$89.99

A5 tube, buffer, and spring. Choose your buffer below.

Product details ↗
Build a custom configuration Chart & individual parts.

Review the chart and its notes before choosing components.

LIMA SIX buffer system configurations chart Open full-size chart ↗

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