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Luth-AR 9mm Carbine Buffer Assembly - Mil-Spec, Black 9MM-M-BAP
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Luth-AR 9mm Carbine Buffer Assembly - Mil-Spec, Black 9MM-M-BAP
The Luth-AR 9mm Carbine Buffer Assembly would work but you may experience feeding/ejection reliability issues. Buffer weight for the AR 40 is going to be a bit lighter than that range (5.4-7.4 oz for AR9) due to the larger caliber having more pressure behind the round when fired. I would suggest buying a heavy tungsten buffer weighted at 4.3 oz paired with a pistol/carbine buffer spring. Email us at Techsales@opticsplanet.com if you have any further questions.
Helpful Positive Review
PCC AR Buffer
by
Douglas,
February 13, 2021
I was building a 9mm AR and wanted to use the correct heavy buffer to make it last. I found this one at Optics Planet. Ordering was super easy, and it arrived in just a few days. Thanks for having such good customer service. I’ve ordered other variou...
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Spring gets bound in the buffer tube. I could have just gotten a bad one, but I'll stick with aeroprecision in the future, I think. The locking nut is wider then any of my others as well and doesn't spin quite as smoothly. I matched it with a luth-ar...
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Ordered and ran this buffer in my PCC all last season and it kept up with all the expensive carbines! Flawless in my Spikes lower with PSA upper. It absolute fire paired with a Hiperfire eclipse trigger!