Zaffiri Precision Blowhole Compensator is the perfect aftermarket addition for flatter shooting. Our solid 17-4 stainless steel comp allows for not only gas redirection but less muzzle climb due to its weight. What does that mean for you?! Faster follow-up shots. Compensators may require a different Recoil Spring Assembly (Guide Rod) weight depending on what ammunition you are using. Warning: This product is to be installed by a competent gunsmith. No liability is expressed or implied for damage or injury which may result from installation or use of this product. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by for Glock. for Glock does not warrant or represent that this product is compatible with for Glock pistols. Zaffiri Precision is not affiliated in any manner with, or otherwise endorsed by, for Glock, Inc. or for Glock Ges.m.b.H. The use of for Glock on this page is merely to advertise the sale of for Glock pistols, parts, or components.