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Necessary .22 conversion item. |
May 15, 2020 |
| Reviewer:
Timothy the machinist. from Mount Pleasant, WI United States
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I have a CMMG AR-15 .22 conversion for a pistol configuration AR platform. I design recoil systems for my 1911 hand guns, which gives me a working understanding on "blow-back" and gas operated firearms. The stock hammer spring on an AR-15 fire control kit, is a little too stiff for the blow-back system of a .22 conversion to cycle and you wind up with failure to eject and ascending rounds to jam. In other words the .22 blow-back doesn't have enough power to cycle because the hammer spring eats up it's inertia. Simple physics; your reduced power hammer spring lowers the energy needed to cock the hammer and cycle the weapon with a clean ejection and feed. I went from a jam every other round to emptying a full mag as fast as I could pull the trigger. The spring does not adversely affect cycling when you switch back to .223. Good product.
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