Hey John Doe, have you heard of kynshot hydraulic buffers for ar 15 s? When i ordered these blitzkrieg benelli M4 sights, they sell these hydraulic buffers and i did some research on them. I ve heard that they are AWESOME and make a big improvement in flt recoil and rate of fire. They have these for ar15 s and ar10 s. They aren t that expensive and has have a warranty of 10 yrs or 1 MILLION rounds LOL . I am waiting on the one i need to come back in stock to order one.