$49.12
9 in stock
Online inventory may differ from in-store availability.Â
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
This Luth-AR carbine buffer kit gives you everything required to finish the rear end of an AR-15 lower receiver or upgrade an existing rifle to mil-spec carbine recoil specs. The 6061-T6 aluminum tube comes hardcoat anodized in black for solid corrosion protection, and the assembly pairs with most standard collapsible carbine stocks.
What's in the Box The kit ships completely assembled and ready to thread into any mil-spec 5.56/.223 lower receiver. You get a mil-spec diameter carbine tube, a properly weighted 3.2-ounce carbine buffer (tuned for .223 and 5.56), a carbine recoil spring made from stainless steel, plus the castle nut and end plate needed to secure everything in place. The included latch plate and lock ring ensure the tube won't back off during use.
Mil-spec tubes have a 1.14-inch diameter and are built to strict military standards, which means better compatibility across the board. Most aftermarket stocks and accessories are made for mil-spec, so you'll have plenty of upgrade options later. The difference between mil-spec and commercial tubes is small but important—a commercial stock won't fit properly on a mil-spec tube, and forcing it can damage both pieces. Since this kit is mil-spec, you'll work with the industry standard that most manufacturers support.
Threading the tube into your lower receiver is straightforward with basic tools. The castle nut torques down to secure everything, and the lock ring provides extra insurance against any creep. If you're building a carbine-length AR for 223 or 5.56, this assembly plays well with carbine-length gas systems. Just remember that switching from a rifle-length gas system to carbine recoil components can sometimes cause reliability issues, so make sure your gas setup matches your buffer choice.
This mil-spec carbine buffer assembly threads directly into any mil-spec 5.56/.223 lower receiver. Before installing, confirm your lower is mil-spec (not commercial). If you're unsure, check the threading diameter or contact your lower's manufacturer. The installation requires a castle nut wrench and takes just a few minutes.
This is a carbine-length recoil system, so it's designed to work with carbine-length gas systems. Installing carbine recoil components on a rifle-length gas system can cause cycling issues or reliability problems. Make sure your barrel and gas tube are carbine length to match this buffer assembly.
This tube is mil-spec, so it works with any collapsible or fixed stock designed for mil-spec carbine buffer tubes, including Luth-AR's MBA-3, MBA-4, and MBA-5 stocks. Most aftermarket stocks on the market are built to mil-spec standards. Avoid commercial stocks, which have a slightly larger diameter and won't fit properly.
Yes, the carbine buffer spring included in this kit is made from stainless steel, which resists corrosion and maintains consistent performance over time. The 3.2-ounce carbine buffer is also optimized specifically for .223 and 5.56 ammunition and won't work properly with .308 rifles.
| UPC | 859819007096 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 223-M-BAP |
| Product Type | Buffer Tube Complete Assembly |
| Style | Mil-Spec |
You must be logged in to post a review.
Reviews
There are no reviews yet.