Details
Details
Reduce felt recoil and improve cycling reliability with the Spike's Tactical ST-T2 Tungsten Heavy Buffer 4.0 oz. This heavier buffer slows bolt carrier velocity, helping tame over-gassed systems and deliver smoother, more controlled shooting.
The Spike's Tactical ST-T2 Tungsten Heavy Buffer 4.0 oz is a carbine-length buffer designed for AR-15 platforms using carbine receiver extensions.
Heavier mass slows bolt carrier velocity for reduced felt recoil and less bolt bounce.
Increases dwell time, improving extraction reliability in over-gassed or suppressed setups.
Direct drop-in replacement for standard carbine buffers with no modifications required.
- Type: Heavy Heavy Carbine Buffer
- Length: 3.25"
- Fill: High-Density Tungsten Powder
Compatible with AR-15 and AR-10 platforms using Mil-Spec or commercial carbine-length receiver extensions. Also fits 8" GI-spec AR-10/AR-308 receiver extensions.
Precision machined to mil-spec dimensions for reliable fit and consistent performance. Built from durable materials to withstand years of regular use.
A reliable choice for standard AR-15 carbine builds, replacement parts, and new builds using carbine-length gas systems with 16-inch barrels.
Spike's Tactical is a veteran-owned manufacturer of AR-15 rifles and components, known for innovative designs and dependable performance trusted by military, law enforcement, and civilian shooters.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.Ratings & Reviews
243 reviews
Very effective upgrade!
by Ryan
I just received this buffer last week and shot my gun with it for the first time. Wow, what a difference from the carbine buffer, very pleased. The recoil is softer, the muzzle jump is less and it slows down the cyclic rate, which is a good thing. This is worth every penny great price!
Excellent Low-Cost Upgrade
by Hans
Helps keep you on target between shots. Primary Arms was the only one in-stock at the time! Two thumbs up!
Great Product-Fast Shipping
by Michael
Does have a five star rating for nothing. Product shipped quickly and was exactly as advertised. Would highly recommend to anyone.
Well pleased
by Hollis
Buffer fit perfect no problem's at all better than what came with my AR rifle. Primary Arms are the greatest and the shipping is outstanding fast and I plan to give them more of my business.
Super Fast Shipping Great Product
by Anthony
ST T-2 is a top shelf product & thats very obvious from Any web site review that you read its smoother runningno noise & less felt recoil. But I wanted to give Props to Primary Arms for such great Cusomer Service Prompt super fast reasonable shipping In the heaviest part of the Christmas season Thanks You have gained a customer
Smoother and Gentler
by Josh
The powder fill is less "clackity" than my original buffer's chunks-o-metal. At 4oz it also mildly reduced recoil on my 16" middy. The really awesome part is that the gun will still shoot anything from cheapo Tula on up.
This buffer is awesome!
by Ryan
I just shot my AR for the first time with this buffer and there is a definite difference from the carbine buffer. Its very quiet and I have less muzzle bounce. It just seem to recoil smoother, no "thunk". I'm very happy with this purchase.
Top notch buffer
by Bushwhacker
Top notch buffer. Looks cool, no rattle, fit and finish are superb. Great upgrade. Used on a 16" mid length .223 build.
SPIKE TACTICAL ST-T2 BUFFER IS A CHEAP UPGRADE OVER STOCK BUFFER
by Fong
Bought this all together with the Lantec UAR Billet Upper and Strike Industries Enhanced Forward Assist from Primary Arms. Spike ST-T2 buffer is pretty quiet with my Damage Industries Enhanced Buffer Spring. A perfect combination with my Magpul UBR Stock that I also bought from Primary Arms just a few month ago.
cant go wrong with spike heavy buffer
by Fong
pick this up from primary arm to top off my damage industries enhanced buffer spring