SKU: 13309658381

Strike Industries G4 Mass Driver Comp - Standard (Glock 17)

Sale price$5715.00 Regular price$6350.00
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Description

Strike Industries G4 Mass Driver Comp - Standard (Glock 17)Description The Strike Industries Mass Driver Compensator (MDC) represents a quantum leap in compensator design. Current designs have largely been unchanged since the 1930s. Its about time for something revolutionary. The Mass Driver name is inspired by the idea of theoretical mass driver engines in space travel. By ejecting mass, an equal and opposite reaction is generated propelling the space vehicle forward. The Mass Driver Compensator is driven by

Description

The Strike Industries Mass Driver Compensator (MDC) represents a quantum leap in compensator design. Current designs have largely been unchanged since the 1930s. It’s about time for something revolutionary. The Mass Driver name is inspired by the idea of theoretical mass driver engines in space travel. By ejecting mass, an equal and opposite reaction is generated propelling the space vehicle forward. The Mass Driver Compensator is driven by the hot gasses expelled through the barrel after the round is discharged, and acts as a counter balance system to attenuate mechanical recoil. Barrel mounted compensators add reciprocating mass and increase the moment of inertia to the operating system, which can have a negative effect on reliable cycling of recoil operated handguns. By separating the compensator from the operating components after ignition, the MDC allows for close to stock cyclic speeds, and reduces reciprocating mass. The compensator of the MDC system has a widened bore to reduce baffle strikes and keyholing rounds along with a 2.5mm relief cut at the top of the rear to reduce “lipping” and damage to the face of the pistol slide.

Threaded Barrels: Yes, the Mass Driver Comp is compatible with most GLOCK™ aftermarket threaded barrels. We've tested with majority of the popular brands on the market but not all. However we recommend use with non-threaded barrels if possible.

COMPATIBILITY:
-For GLOCK™ GEN3, GEN4 or GEN5 G19 (compact) & G17 (standard) SLIDES
-Holsters: SI Mass Driver Comp sits flush with OEM GLOCK™ slides and can be used in most open-ended holsters that accommodate compensators

NOTE:
-Recommended torque value for guide rod nut is 25 lbs/in.
-Use with +P and +P+ 9mm ammo will produce premature internal spring wear and cause failure

Package Contents:
-x1 Comp main body
-x1 Recoil spring
-x1 Guide rod
-x1 Guide rod fitment washer
-x1 Guide rod head
-x1 Internal spring
-x1 Guide rod plug (GEN4 only)
-x1 Warning card

Product Features:
-No threaded barrel needed (but can be used)
-Eliminates the need for threaded barrels. 50 State Legal
-Widened bore to reduce baffle strikes and keyholing rounds
-2.5mm relief cut at the top rear of comp to reduce "lipping" and damage to the face of the slide
-No permanent modification of weapon required
-Blended, no snag profile
-Matches with width of the slide, it can be used with open holsters, no special holster needed
-Counter recoil design, as the slide moves back the comp moves forward to reduce felt recoil
-Contours with slide dimensions to be compatible with most open-bottom holsters
-Precision CNC machined

Threaded Barrels: We recommend use with non-threaded barrels if possible but yes, the Mass Driver Comp is compatible with most GLOCK™ aftermarket threaded barrels. We've tested with majority of the popular brands on the market such as: AlphaWolf, Battle Arms Development, Bear Creek Arsenal, Brownells, CMC Triggers, Faxon Firearms, Fortis Manufacturing, Grey Ghost Precision, Killer Innovations, LANTAC, Lone Wolf Distributors, Next Level Armament, Shadow Systems, Suarez International, Tactical Kinetics, ZEV Technologies.

NOTES:
-Designed for and tested on OEM GLOCK™ factory and Strike Industries slides
-SI cannot guarantee proper fitment and application on third party slides and frames
-Recommended torque value for guide rod nut is 25 lbs/in.
-Use with +P and +P+ 9mm ammo will produce premature internal spring wear and cause failure
-Loctite® Threadlocker Blue 242® on all threads
-Gunsmith or armorer installation recommended
-Product tested with factory GLOCK™ components
-Performance may vary when using third party compatible GLOCK™ components
-Consult with a local gunsmith for any custom modification while use with this product

COMPATIBILITY:
-For GLOCK™ GEN3, GEN4 OR GEN5 G19 (compact) & G17 (standard) SLIDES
-Holsters: SI Mass Driver Comp sits flush with OEM GLOCK™ slides and can be used in most open-ended holsters that accommodate compensators

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.
--“GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Strike Industries Inc. nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13309658381

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Bozeman, US
★★★★★ 5
Luvs pulls up are the best
Size: 5T-6T, Unit Count: 48
I love this brand. It’s very secure, and the adjustable band makes it easy to tighten without taking off my child’s pants. It doesn’t leave an odor, the texture is smooth, and my child is always comfortable. The price matches the quality, and there’s no leakage or spillover. Overall, it’s very durable. Make sure to have it correctly fastened because the Velcro can leave scratches on child skin.
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Reviewed in the United States on December 9, 2025
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Los Angeles, US
★★★★★ 4
Toddler approved
Size: 4T-5T, Unit Count: 99
Fits true to size and easy to pull up and down by my toddler. Very absorbent - perhaps a little too absorbent as it's taking my daughter forever to be potty trained and she's content in her soiled training pants... Great quality overall.
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Reviewed in the United States on August 29, 2025
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Marie33kl
Chelsea, US
★★★★★ 5
They prevent leaks, and fit great!
We have always used Huggies diapers for our babies and young toddlers because they were the only ones that never leaked or caused a rash. My second daughter was fully potty trained at 2.5 years old and never needed pull-ups. However, our third daughter, who also trained at 2.5 years old, digressed with her nighttime potty training due to instability - we moved twice within the first 6 weeks after she potty trained. So we had to get pull-ups for her to wear at night. Obviously since we loved Huggies diapers, we tried Huggies Pull-Ups, and again, they did not disappoint! They never leak, even on nights when she doesn't get up to go at all, and has lots of pee, and they have never caused a rash either, no matter how full. She's been using them for 1.5 years, at night, and we have never had any issues. They are dependable: decently comfortable to the child, do not cause rashes, fit properly with the ability to adjust at the thigh (if needed), and they prevent leaks! I highly recommend them!
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Reviewed in the United States on January 19, 2025
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Kathy
Phoenix, US
★★★★★ 5
Price good
Size: 5T-6T, Unit Count: 80
Perfect for starters
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Reviewed in the United States on April 11, 2026
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Alex Thrace
Draper, US
★★★★★ 5
Highly effective
I typically take Vitamin D in large amounts to get enhanced benefits for bone strength and immune strength. this formulation includes vitamin K which enhances the absorption of calcium in your system. These are high strength capsules with 5000 units of D in a small and easy to swallow capsule. As with any vitamin product it takes some time for the benefits to be felt however with these products they seem to have better effectiveness than my previous brand and I find myself not having to take as much to get the full benefit. The price is good for a premium product and the developers seem to have put a lot of thought into the formulation. I am fussy about my supplements and always buy the best that I can find. The known benefits of Vitamin D are many and it is essential for your good health. Yes, you can get slightly cheaper D capsules in Costco but that is false economy, as overall it will take more to get the same benefit. I love this company and all their products are top-shelf. Don't shortchange your health. I will buy these again.
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Reviewed in the United States on December 19, 2019

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