ST Skeleton Tube

Extremely well built flawless fit and function. Simply an awesome product.

Purchased this for my PSAK-102 receiver build as it is offered on a few of the pre-built options from PSA. Some minor filing and fitting was required, but overall tight fit. Excellent quality and light weight. Will most likely purchase again for future builds.

Stupid simple to install/face mount, looks mean and cuts recoil like a brake should. If you’re getting one, and you don’t have a suppressor to mount yet do yourself a favor and get a bds too. The vertical fireball can mess with your sight picture depending on what you’re firing. Love it!

Excellent product one of the best on the market

Not my first purchase from JMac and won’t be my last! Very impressed with the durability of this stock adapter without it being too heavy. Using it with the B5 Bravo stock and it looks great.

Best way of putting on a stock or brace on sig spear LT! Top tier quality!

Best option for my scar 15p hands down. Also check out the SCAR RSA they make it’s superior to OEM all day.

Super happy with the ST-6, fit great on my kp104 and feels great with the optional brace.

Gives the mcx a whole new look. Love it!

I got my Tan ST-6 Skeletonized Tube that I’ve now installed on my MCX. The tano finish on this is nothing short of stunning. The quality on the part is top notch. This addition on the MCX definitely took up a few notches. Shipping was fast also. I’ll definitely be purchasing more items in the near future. I highly recommend this product. Joel Tek Martinez Teknical Methodz Firearms Training Orlando, FL.

Amazing fit and craftsmanship, well worth it .

Never held a more nicely machined piece of metal in my life. Every Jmac product including this one is worth all the many pennies

solid construction, good looks, 100% functional- what's not to love?! keep up the good work guys!

Fantastic product! I ordered it to replace a different folding tube. This this tube saved me a full pound off the back of the gun! It also locks up super tight. I was worried this tube would cause the stock to have more play, but the stock is rock solid in each detent! Much better than any buffer tube I’ve ever used. It also doesn’t hurt that it looks really bad ass on the gun!!!

Perfect product for my work gun. Put it on my MCX and it enhances the gun by reducing unneeded bulk. Smooth sliding, Folds nicely to the side using all issue stocks including the current Magpul SL-K. Plus it looks pretty bad ass and we all know how important that is.

Just received my ST-6 for 5.5mm Folding AKs and I’m very impressed. This is machined and finished so well. The quality is above and beyond the “competitors” product that I ordered and tried while waiting for yours to come back in stock. Thankfully I’m returning theirs after they told me to file it down a ton to get it to work. Just wanted to let you know I’m a customer for good now!

I’m extremely impressed with the fit, finish and ease of installation of the ST-6. It also make my AK look even more Awesome!

Bought this for BRN180. Super lightweight, solid hinging mechanism, and buttery smooth when adjusting length of pull. Zero wobble with MFT stock. Looks badass.

Wanted to buy this and the Folding Stock/Brace Mount for 4.5mm Folding AKs. Will have to wait. Other than that, this is the first item to fully secure a SB tactical SBA3 with *Zero Wobble*. Machined piece with anodizing. Does the job it supposed to. Wish it came with inch/lbs torque recommendations.

The ST-6 is fantastic... not only is it aesthetically pleasing,it's rugged. The finish is great and the machine work is fantastic...The extra QD socket is also a bonus. One other thing is the shape of it on my check seems to fit better into my check bone pocket where standard buffer tube seems to be larger and not as comfortable. It fits well on my kp9, sig canebrake, M85 and anything else that does not require a standard buffer tube assembly.

got the Akm-rsa then got this bc the sig stock i wanted was sold out. i was considering getting the midwest ind folding a2 buffer tube untill i found out how much it weighed. a good friend of mine just saw this set-up on my rifle and almost lost it he has the magpul Zhukov folding stock and i could tell he wants a jmac now! running the moe buttstock and it folds flush in any position i do not have an optic rail. i think that a magpul sl stock that i was gonna get would have been too wide to be flush in all positions. i really like my whole set up a whole lot better but have 380$ into the folding stock it so thats kind of pricey

This is the second skeleton tube I’ve purchased from JMac. I am running their skeleton tubes on both of my AK’s - an SBR and this Arsenal. This opens up a lot of options to improve the ergonomics of the Arsenal SAM7SF. The included adapter fits tight with the existing hinge pin. Locks up snug - no wobble. I added an M4 type stock to the tube to make the LOP more comfortable. If you love your SAM7SF but don’t like the wire stock here’s your solution.

The sam 7 sf is wonderful and it locks up tight and a very good fitting with Magpul stock

Installed on a KP-9 SBR. The included SF adapter locks up solid with the ST-6. I attached a B5 Bravo stock and again fits very tight on the JMac skeleton tube. This setup gives a perfect repeatable cheek weld every time for me and the skeleton tube aesthetic goes with the Zenitco rail I had already installed. I had been looking at the Zenitco stocks, but I think the JMac tube with the Bravo stock is a lighter, simpler and more efficient setup if you are looking to SBR the KP-9. Very happy with how it runs. Thank you JMac!

This skeletonized tube is a game changer for wanting an AR style collapsing stock on on an AK. Runs smoothly with 1913 folding mech on pistol Note: If you combine with skeletonized tube with the folding mech, have a slimmer brace/stock if you want to have a more flush fit. Another great product! Well done Justin, Ash, and JMac Team!