the one i have on stops at the front site, shouldn't be an issue unless you've changed all the dimensions....im over 300 rounds through mine, and it works great...my 7 y/o daughter tried it out and fired like 10 single rounds last week. Totally eliminated muzzle rise and most of the recoil, not that its a pounding round but is very noticeable. Great product, just follow directions and torque to 90 FOOT pounds ,not INCH pounds :-)