AR bolt catches

[Jgun]

I should know this, considering that I've put a few of each together by now, But I never compared two side by side. I know that most of the fire control parts for the AR-15 and the .308 platform AR's are at least the same size. Like selectors, and triggers, but can anyone confirm for me that the .223 and .308 bolt catch are different dimensionally, I'm assuming they are.

[Robocop1051]

I pretty sure Armalite makes theirs a tid bit longer, and DPMS is standard. I had an AR15 (I think from a Colt) bolt catch on my JD. I think we're all looking at some trial-n-error between all the different makers.

[Jgun]

What I was wondering about was if one of the bolt catches for the AR-15, with an integral BAD type lever could be used on my Kaiser .308. I understand that there could be interference issues with the receiver it'self but was wondering, if I picked up one of the extended AR-15 levers and clearenced it to the outside of the receiver, would the part of it that functionally locks the bolt back be the same on an AR-15 bolt catch as a .308 bolt catch. I'm thinking no because the bolts are different dia's. But thought I'd ask before buying and modifying one only to find out that they wouldn't function on the .308 platfoem because they are dimensionally different.

[survivalshop]

Does this help .

[Jgun]

Based on that pic, I'd say they don't look interchangable. I would like to add one to the gun but the Magpul BAD doesn't work, I may see about welding one of the steel add on levers to an AR-10 bolt catch. Thanks.