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I installed a ACE LTD USA M4 SOCOM (L) On my Armalite AR10 Carbine. The rifle had a Adjustable Carbine stock with a carbine buffer and spring. ACE LTD says to use a Rifle A1/A2 buffer and Spring. I put the stock on with a the rifle buffer and spring and now it bottoms out before the mag catch can hold the bolt open. The bolt is visible from the ejection port. When I put the Carbine buffer back in it has to much space. Im about 1/4 inch to long with the rifle buffer and 2 inches to short with the Carbine buffer. Ace says this stocl/rifle buffer combo should work with my AR10. Whats wrong here?
