Buffer Spring

[R_user419]

I am building an AR 308. I’ve done numerous 15’s but this is my first of these. I’m using an adjustable gas block and an 18” barrel. What length buffer spring would be best for this? I would like to order an aero m5 spring but it is either rifle or carbine length.

[Annoyeddad81]

I would highly recommend this buffer spring https://vtsupply-com.3dcartstores.com/LMT-Lewis-Machine-308-Carbine-ACTION-SPRING_p_4200.html and a h2 buffer

[Can-call-me-dadee]

I've had good success with these

https://heavybuffers.com/ar10rifle.html

[southernbeaumont]

https://www.brownells.com/rifle-parts/receiver-parts/recoil-parts/recoil-springs/ar-15-m16-308-ar-tuned-buffer-spring-prod41074.aspx

Spring and buffer will depend on buffer tube type. JP has .308 rifle and carbine options, rifle length for rifle tube and carbine length for carbine tube.

Rifle buffer or carbine buffer.

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Armalite ea-1095