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HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28

SKU: HKP-01845
Brand: USA

HK, Walther, Umarex 416, Colt M4 or MP5-A5 .22 Barrel Adapter With Thread Protector - M8 X.75 to 1/2 X 28

The finest thread adapter available that converts the factory thread pitch to 1/2 X28. Each adapter comes with a new O-ring (red) & built in wrench slot. This custom adapter allows you to simply unscrew the stock flash hider and quickly and effortlessly convert the barrel to 1/2X28 threads. This adapter can be mounted permanently & provides the perfect index without any loss or deviation of zero.This is the lowest profile and factory correct mount that you can get.

This is the one & only adapter made for the Umarex HK 416D & Colt M4 & MP5-A5 .22 style rifles. Each adapter comes with a fitted thread protector for protecting the exposed 1/2 X 28 thread when a flash hider, comp or suppressor is not in use. This is a must have for those that want to use a sound suppressor or other muzzle device. This part is made in the US and is only available here at HKParts.net.

Fits all of the following:
  • HK 416 .22 LR Rifles & Pistols
  • Colt M4 .22 LR Rifles
  • HK MP5 .22 LR Rifles
  • Other Walther/HK/Umarex applications

Note:Not for use with the GSG-5 as the GSG5 models have 1/4 X 28 threads

Technical Note: The O-ring on the adapter takes a lot of wear as you screw and unscrew different devices. We highly recommend purchasing spare O-rings for it, These are found in the related products section below.
Origin: USA
Price: $29.95$45.0033% OFF
In Stock
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HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
HK, Walther, Colt, 22LR Barrel Adapter - 1/2 X 28
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Product Reviews

Write your own review


"M. McIver"

Michael McIver on 5/15/2012 7:54:01 AMVerified

Overall Product Rating:


Fast shipping and great product. The quality is excellent. A "must have" if a threaded barrel is needed for your Colt AR15-22cal.


"HK 1/2x28 barrel"

Mike D on 7/30/2013 8:48:59 PMVerified

Overall Product Rating:


Great company and a great product! Quick ship, packed well and overall another great experience. Thank you!


"Colt M4 Barrel Adapter"

Steven Russo on 12/21/2011 11:28:02 AMVerified

Overall Product Rating:


Great product, great delivery service.


"Just what I was looking for"

Jonathan Fornek on 2/8/2018 1:21:57 PMVerified


Order Fulfillment:


Desired Compatibility:


Umarex HK416D 22lr

Product Quality:


Overall Product Rating:


Adapter works perfectly, only thing that would make it better is if the adapter came with Loc****e on the threads to prevent it from un**** while firing.


"Allows compatilility with 1/2 / 28"

Kenneth Talbott on 11/21/2013 9:08:22 PMVerified

Overall Product Rating:


Now I can use all of my Ruger accessories on the HK - muzzle brakes and flash suppressor


"Barrel Adapter"

C.J. Blickhan on 6/30/2013 10:49:42 AMVerified

Overall Product Rating:


Great part! Comes with O ring and thread protector, ready to mount supressor.


"Great part"

Alec H on 6/26/2013 7:54:25 AMVerified

Overall Product Rating:


Great customer service and the part works great.


"suppressor adaptor"

adelio lopez on 9/13/2011 3:03:29 PMVerified

Overall Product Rating:


This product is great. It fits on my colt m4 22 and looks great. The only draw back to this product is that is needs to come with a tool to tighten on the rifle it unscrews with the suppressor at the same time if not tighten enough and it tricky to take it off from the suppressor. But overall I recommend.


"suppressor adaptor"

J Rit. on 7/1/2013 11:38:48 AMVerified

Overall Product Rating:


Works great on my HK/Uramax 416! I run an AAC Ranger 2 on my 416 .22LR and it runs great. great product, no issues.


"Shooter"

Wilson LaGraize, JR on 7/22/2013 7:22:53 AMVerified

Overall Product Rating:


Very helpful and quick service. Thank you