57 inches”. So I took a caliber to my BCGs and all measured 1.57 inches. So I bought to considering that and made a decision to file down the trigger lock bar ever so a bit. Now I am able to put the gun alongside one another! I did drill https://lanezfsxg.techionblog.com/36826401/helping-the-others-realize-the-advantages-of-frt-trigger-for-sale