Mercury Recoil Reduction Weight Kit

The XLR Mercury Recoil Suppressor is now available for all XLR buttstocks. This tube fits inside all XLR buffer tubes. The new trend in competition rifles has been to add weight. Not only does this tube add a whopping 24 ounces of weight (18.5 ounces if using the short tube) but also takes it a step further with the recoil suppression dynamic of a mercury dampening system.

All recoil reduction systems use the inertia principle of moving a mass of weight within the gun to slow down and offset part of the apparent recoil. Most devices sold contain two springs and a lead or steel weight. Some claim to have hydraulic action but are just spring-weight units filled with oil.

The Mercury Recoil Suppressor works on a different principle. The moveable weight is liquid mercury, free to react instantly when the gun is fired. Practical size limits spring-weight systems to using small moveable weights. The use of mercury allows us to increase the weight within the Mercury Recoil Suppressor while keeping overall size and weight within reasonable limits.

NOTE: 'Standard' refers to buffer tubes that utilize a castle nut system. 'Contoured' refers to buffer tubes that DO NOT utilize a castle nut.

*If being used in a standard buffer tube a 1/4" hole will need to be drilled through in order to install the mercury tube correctly. If you have any questions please give us a call.

NOTE: New products may have extended wait times & may not be in stock at the time of purchase.

WARNING: This product contains Mercury, a chemical known to the State of California to cause birth defects or other reproductive harm. For more information go to

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