Retrofit Kit, Matech

Your Price: $20.50
In Stock.
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Part Number:RKM
My earliest pet project while I was at Battle Arms had come home :)

The Matech backup rear sight was one of the first backup sights to feature an adjustable elevation, more information can be found on Matech's site

Well made and tough, it can be found on many issued M16s and civilian owned AR15s.

But it isn't without its share of shortcomings, chief among them is the mounting bracket and recoil screw, which the Retrofit Kit, Matech (RKM) aims to address.

RKM (retrofit kit, Matech) has a redesigned and reinforced clamp (machined from 1080 carbon bar stock steel, manganese phosphate plated), and a grade 8 screw (same grade as the carrier gas key screws).  RKM's grade 8 screw has a smaller diameter Allen socket, and is far more appropriate for the diameter of the screw and there is less chance of over torquing.  The clamp is significantly thicker, and redesigned in 2016 for a less snag prone profile. 

RKM's grade 8 screw requires a 7/64 size Allen wrench, and is not included.  Torque to snug, then another 1/4 turn.

Made in the US.
5 Stars
Great Retrofit Kit!
I'm using these on three Matech's because the stock screws broke. These are a great upgrade, solid and I don't have to worry about them breaking. I recommend upgrading your Matech's with these.
Did you find this helpful?  6 of 6 Found Helpful
Reviewed by:  from Alaska. on 7/11/2020
5 Stars
Great Kit, AMAZING Shipping
The kit is a great idea to fix the inherent design weakness in the original sight. I'm blown away by the shipping - ordered Friday afternoon, had in-hand halfway across the country Monday evening.
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from South Dakota. on 10/28/2020

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