The Herrington Arms HC43 Glock Micro Compensator is designed to deliver severely reduced recoil with your trusty micro-Glock pistols. It is made of extremely durable and light 7075 Aluminum and coated with Black Anodized or FDE Cerakote finish that ensures great visual compatibility with your Glock configurations. Rest assured, it's going to look great and perform amazing with your OEM Glocks. We did not want to leave out the fully custom build guys and gals, so we now offer a NO FIN option that is the exact same compensator. It simply does not offer the fins off the back that wrap around the gen 5 slides like the original HC43 comp. Most aftermarket slides will not work with the finned option, thus the HC43B was born! The HC43 Compensator is designed to work with Glock 43/43x/48 variants with 1/2-28 barrels and they must be a GEN 5 OEM Glock slide or Shadow Systems CR920! It works great with stock springs, so no change is required.   Highlights Compact size micro compensator Engineered to greatly reduce recoil and get back on target quicker 7075 High durable aluminum ensures reliability Black Anodized or FDE Cerakote finish provides great visual compatibility with your Glocks REQUIRES A THREADED BARREL DOES NOT WORK WITH KKM OR BARSTO BARRELS! HC43 FIN version works with ONLY OEM Gen 5 Slides! HC43B NO FIN version works with all slides! No questions asked, lifetime warranty! Works on a Shadow Systems CR920 Attached to a G43 its overall length is .08 longer than a stock G48   About Glock Gaston Glock, an Austrian engineer, successful businessman, and manufacturer of injection molding parts and components, founded GLOCK Ges.m.b.H in 1963. In the 1970s, development and production start-up of the first military products began to take place with the development of a line of knives, grenade casings and machine gun belt links. In the early 1980s, the semi-automatic GLOCK service pistol was born in response to meet the needs of the Austrian military. It's polymer frame and the developed SAFE ACTION® System revolutionized the pistol market. Mr. Glock's innovative design successfully passed a series of stringent tests against domestic and international competitors. In 1983, the GLOCK pistol was accepted by the Austrian Army as their new service pistol. Shortly after in 1984, the GLOCK 17 soundly passed the NATO durability test. As a result, the pistol was selected by the Norwegian Army as their standard sidearm, putting GLOCK on the road to becoming the preferred international law enforcement sidearm. In November 1986, the company opened its U.S. headquarters, GLOCK, Inc., in Smyrna, Georgia. The GLOCK pistol would soon be available in multiple sizes and accept different caliber ammunition. This combination, partnered with the simplicity and reliability of Mr. Glock's design, revolutionized the pistol market. Over 65% of federal, state and local agencies in the United States have been issued GLOCK pistols. The Herrington Arms HC43 Glock Micro Compensator is a smart upgrade with solid function and an amazing look. Compensators are the best choice when you need to severely reduce vertical recoil; however, this compensator is also designed to narrow the horizontal recoil arc by tunneling the gas not only upward but to both sides as well. Specifications Material: 7075 Aluminum Finish: Black Anodize or FDE Cerakote Compatibility: Glock 43/43x/48 with 1/2-28 Barrels and must be GEN 5 slides  Included: 5*64 Allen key *Note: O-Ring must be removed to fit flush   DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.