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Most compensators haven't changed much in decades. They thread onto the barrel and just add weight to everything that reciprocates when the gun cycles, which can throw off reliability on a recoil-operated pistol. Strike Industries took a different route with the Mass Driver Comp Compact. Instead of hanging off the muzzle, it rides on a dedicated guide rod assembly and moves forward as the slide travels rearward, acting like a counterbalance that cancels out part of the recoil impulse. The result is a flatter shooting Glock 19 that still cycles close to stock speed.
Because the comp separates from the operating group after ignition, it keeps reciprocating mass low and lets the pistol run its normal rhythm. Real-world feedback backs this up: folks report noticeably less muzzle flip, faster target transitions, and reliable function even with lighter 115gr practice loads that give some barrel-mounted comps fits. The compensator body uses a widened bore to cut down on baffle strikes and keyholing, plus a 2.5mm relief cut at the top rear to protect the face of your slide.
This version is built for the Gen 3 Glock 19 and OEM-pattern slides, and it also plays nice with popular aftermarket slides like PSA Daggers and Polymer 80 builds. No threaded barrel required, and no permanent changes to your gun. It ships as a complete kit and installs with the included guide rod, springs, and a dab of blue threadlocker. Getting the guide rod and stiff recoil spring seated is the trickiest part, so a padded vise and Strike's install video make life a lot easier. An armorer or gunsmith install is a smart call if you're new to Glock work.
The blended profile matches the width of the slide, so it drops into most open-bottom holsters that accommodate a comp. Machined from steel with a black finish, it holds up to serious range time and looks the part on any build.
No. The Mass Driver Comp mounts to a dedicated guide rod assembly rather than threading onto the muzzle, so your factory non-threaded barrel works fine. If you already run an aftermarket threaded barrel, it's compatible with most popular brands, though Strike recommends using it with a non-threaded barrel when possible.
This specific model is the G3 version built for the Gen 3 Glock 19. Strike Industries makes separate Gen 4 and Gen 5 versions, so match the comp to your pistol's generation for correct fitment. It's also worked well for many owners on aftermarket slides like PSA Dagger and Polymer 80 builds.
It's a bit more involved than a screw-on comp since you're swapping the guide rod and dealing with a stiff recoil spring. The most common tip is to use a padded vise and follow Strike's install video, which makes seating the guide rod much easier. Apply a little blue threadlocker on the threads and torque the guide rod nut to 25 in-lbs, and if you're not comfortable working on your Glock, have an armorer handle it.
Yes, the comp is contoured to match the width of the slide and sits flush with OEM Glock slides, so it drops into most open-bottom holsters designed to clear a compensator. Some owners note the corners run slightly wider than the slide, so a bit of a snug fit on the draw is possible depending on your holster.
| UPC | 708747548051 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SI-G3-MDCOMP-C |
| Caliber/Gauge | 9mm |
| Color | Black |
| Model | |
| Product Type | Compensator |
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