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Questions & Answers
is this long enough for pin and weld on 13.7 inches to bring overall length to 16 inches? Manufacturer Answer

The Millercomp is 2.6" installed on a 13.7" barrel will bring the barrel length to ~16.3".

by Strike Industries, Manufacturer, September 28, 2023
Just want to confirm is this pure muzzle brake or flash hider? Expert Answer

The Strike Industries AR Miller Comp is a compensator designed to mitigate recoil in the same manner as the SI JCOMP but with the profile modified to be slimmer so that a .750" minimum diameter gas block can slip right over the compensator.

by Ethan, Gear Expert, January 13, 2023
Customer Reviews
Most Recent Reviews
Strike Industries Miller comp by Krink308, Verified Owner, April 19, 2026
Fits on rifle and finish is nice. Gas block fits over it as advertised. But I’ve decided not to use it as the jam nut and comp when tightened didn’t line up so aesthetically it wasn’t what I was hoping for.
Most Recent Reviews
AR Miller Best Comp by AR Miller Best Comp, Verified Owner, January 3, 2025
No need to touch it when removing gas block from a .750 OD barrel, cancels a lot of the recoil, doesn't break the bank. This thing slaps.
Read All 2 Reviews

13% OFF Firearm Parts

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Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Threads per Inch:
1/2x28
Color:
Black
Caliber:
.223 Remington

Code: 3Q-RMC-ARMIL-SI-AR-MIL

MPN: SI-AR-MIL

UPC: 793811763669

List: $32.95
$31.99

  • Strike Industries AR Miller Comp for .223/5.56, 30mm, Black, One Size, SI-AR-MIL
  • Heresy Design Silencer Timing Device, 1/2in Threads, Black, HSTDA
As low as $40.94
You Save Up to $1.96
OP Bucks$0.82

Product Info for Strike Industries AR Miller Compensator

The Strike Industries Miller Comp is a muzzle device scaled back in size but with no compromises in performance. Engineered to mitigate recoil in the same manner as the SI JCOMP but with the profile modified to be slimmer so that a .750" minimum diameter gas block can slip right over the compensator. When installed, the Miller Comp matches the profile of the host barrel allowing the user to mount or remove a gas block without having to remove the muzzle device. Now the shooter can reconfigure the rile at anytime. Barrel nut, gas block, gas tube and handguard can all be serviced, adjusted, or swapped out with ease. The Miller Comp is intentionally designed to be a perfect pairing with a 14.5" length barrel to ensure the rifle minimum legal length (16") once pin and welded as a permanent muzzle device which makes it considered part of the overall barrel length. Trying to make the pin and welding process as least time consuming as possible, included in the package is a 2.35mm/3/32" diameter pin as well as a pre-drilled pinhole in the comp. This muzzle device introduces the new Strike Industries Jam Nut as we now give you an easier way to assist in the installation and timing of a muzzle device. The Strike Industries Miller Comp gives you a solution to solving a problem with wanting the shortest rifle legal length barrel setup along with shaving a little bit of weight without sacrificing performance.image

WARNING: California`s Proposition 65

Specifications for Strike Industries AR Miller Compensator:

Manufacturer: Strike Industries
Threads per Inch: 1/2x28
Color: Black
Gun Make: AR Platform
Caliber: .223 Remington
Condition: New
Length: 66.05 mm
Fabric/Material: 1144 Carbon steel
Outer Diameter: 0.75 in

Features of Strike Industries AR Miller Compensator

  • Slender in size without sacrificing performance
  • 2 chamber design mitigates recoil
  • Fits .750" diameter gas block
  • 1/2"-28 TPI thread pitch

Package Contents:

  • Strike Industries AR Miller Compensator
  • X1 Miller Comp
  • X1 Jam Nut
  • X1 Pin

Strike Industries AR Miller Compensator Orderable Models

List of Orderable Models

  • Strike Industries AR Miller Comp for .223/5.56, 30mm, Black, One Size, SI-AR-MIL , MPN: SI-AR-MIL , UPC: 793811763669 , Code: 3Q-RMC-ARMIL-SI-AR-MIL

Strike Industries AR Miller Compensator Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Strike Industries AR Miller Comp for .223/5.56, 30mm, Black, One Size, SI-AR-MIL , MPN: SI-AR-MIL-EDEMO , Code: 3Q-RMC-ARMIL-SI-AR-MIL-EDEMO-RE-B
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Last updated 2026-10-14 UTC.