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Primary Weapons Systems took one of the simplest parts on an AR-15 and gave it a genuinely useful redo. The Enhanced Gen 2 buffer tube is impact extruded from 7075 aluminum, which gives you serious strength and rigidity without the bulk. PWS shaved weight through side fluting and lightening cuts machined into the rear, netting close to an ounce off a standard mil-spec tube. It carries a MIL-A-8625 Type III, Class 2 hardcoat anodized finish, so hardness and corrosion resistance are dialed in for the long haul. At right around 4.3 ounces, it's a smart pickup for anyone chasing a lighter carbine build without giving up durability.
The headline feature here is the ratchet-lock castle nut and endplate. Instead of staking the castle nut like a traditional build, the PWS endplate uses a detent that engages notches machined into the castle nut, locking everything down tight. It stays put under recoil but backs off with a standard castle nut wrench when you want to swap parts down the road. No proprietary tools, no grinding out a staked nut, no drama. That alone makes this a favorite for folks who build and tinker often.
The extended anti-tilt lip supports the rear of the bolt carrier so it starts its travel inside the tube rather than slamming into the front on extraction. That's a real benefit on piston-driven guns where carrier tilt tends to be more pronounced, and it helps everything cycle a little smoother across the board. You also get engraved position numbers, six stock positions, and enlarged drain holes to clear water and grit. The endplate includes an ambidextrous QD sling swivel socket at the rear, so lefties and righties can run a sling without adding snag points or reconfiguring anything.
It's a mil-spec diameter tube, so it drops right onto any AR-15 lower built for a mil-spec receiver extension and plays nice with standard carbine stocks. Whether you're finishing a fresh build or upgrading a tired factory setup, this is one of those parts you buy once and forget about.
No, you install it with a standard AR-15 castle nut wrench, the same tool you'd use on any mil-spec build. The ratchet-lock design replaces the need for staking, so once the endplate detent engages the castle nut notches, it locks down tight. If you ever need to take it apart, it backs off cleanly with that same wrench.
Yes. It's a mil-spec diameter receiver extension with six positions, so it drops onto any AR-15 lower set up for a mil-spec buffer tube and accepts standard carbine stocks. Just note that a mil-spec buffer, spring, and stock are not included in this kit, only the tube, castle nut, and endplate.
The extended lip supports the rear of the bolt carrier so it starts its motion inside the tube instead of slamming into the front edge on extraction. This reduces carrier tilt and helps everything cycle more smoothly, which is especially handy on piston-driven guns where tilt is more noticeable. Over time it also helps extend the life of the tube.
It is. The ratchet-lock endplate has a QD swivel socket at the rear that works for both left and right-handed shooters without any reconfiguring. That keeps your sling attachment clean and free of extra snag points.
| UPC | 811154033611 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EBT-RLCN-KIT |
| Color | Black |
| Model | |
| Product Type | Buffer Tube |
| Style | Mil-Spec |
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