[fatcat]

I have read a few times they they can cause the weapon to fail, Im not sure why because it should be the same as it was before. I know people dont like replaceing the parts fitted and made for that weapon with an aftermerket part.

Also there expensive and a pain to turn on on some guns, the switch is way to small.

I got a pair of the Crimson Trace Laser grips on the S&W .357MAG and they are awesome! (A bit pricey) They do take a fair amount of time untill there worn down to were they dont move and stay on target, but after that they stay there. They dont make any for glocks but they do for 1911's
I like lasers on anything, Got one on my M4A1, 357 and two of my shotguns.

 

[fatcat]

For the 27 I would still recommend the crimson trace laser grips... Ive installed a few of them of 27's and there very nice.

 

[fatcat]

Thinking about getting some for the 27... How much is involved in the install? How much do they normally run (the install)?

You can install them yourself if you know any basics about anything Just push out the rear pin that holds the trigger parts in, push on the grips and push in the new pin they give you, they are fully adjustable as well. I think we install them for 6 bucks but I don't charge most people when I do it myself.. If people only knew how easy it was they would never have us do it.

Do make sure you get the right one, they make one for the old ones without finger grips and the newer gen with finger grips so theres two styles. I think it says "Modelname/numberFG" FG for Finger grips.

With the internal on glocks you replace the whole guide rod the the take down button on the side's and the spring that holds it on. There nifty but you cant adjust them at all.