those are both free float. unless your rifle is free float, those are going to require gunsmithing to attach. if yours is standard, look for quadrails that say "drop in"
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite semi-auto design - HK P7
"A Sig is like a lightsaber - not as clumsy or random as a Glock."