- Gas pressure can be adjusted by restricting or “bleeding off” gas from the piston gas block
- Patented "Bleed Off" design allow gas flow to be adjusted by bleeding the excessive gas out from the piston gas block instead of restricting the gas flow
- Bleed Off port reduces blowback when using a suppressor
- Reduces felt recoil
- One-piece carrier with skis and dimpled key
- Runs much cleaner and cooler than direct gas impingement system – lesser hot gas cycled back to the bolt carrier group
- Gas can be completely turn off for precision single shots
- Safety detent prevent unintentionally backing the screw all the way out
- Made in U.S.A.
- Piston Gas Block: 416 Stainless Steel
- Carrier: Ionic bonded
- Finish: Melonite (Black)
- Gas Adjustment: 30 locked positions
- Length: 1"
- Set Screw Model (.750"): 1.556"
- Clamp-On Model (.750"): 1.559"
- Width: 0.906"
- Piston Gas Block:
- Set Screw Model (.750"): 2.50 oz.
- Clamp-On Model (.750"): 2.57 oz.
- Piston Rod:
- Pistol Length: 0.78 oz.
- Carbine Length: 1.09 oz.
- Mid-Length: 1.31 oz.
- Rifle Length: 1.69 oz.
- Fit: .750" diameter barrels
- 1x Piston Gas Block Assembly
- 1x Piston Operation Rod
- 1x Piston Carrier (Bolt, Firing Pin, Firing Pin Retaining Pin, and Camp Pin are not included)
- 1x 9/64 x 6" L-shaped Hex Key
- 1x 3/32 x 6" L-shaped Hex Key
- 1x Bushing
- 1x Bushing insert tool
If you’re ready to upgrade your AR, opt out of traditional gas impingement setups, and move on to a piston operated system, it only makes sense to go with the best quality, most advanced upgrade components you can lay hands on. When you’re ready to make the jump, Superlative Arms Adjustable Piston System offers you options you won’t find when you shop other manufacturers’ gas piston conversion kits.
What Makes the Superlative Arms Piston Kit Special?
When you choose a Superlative Arms Gas Piston conversion kit, you get more than a box of rough parts and a bill. Every part of the Superlative Arms Piston Kit is carefully machine finished for a precise fit and finish that you can be proud of and that’s just a start. The Superlative Piston Kit is the only conversion kit that features Superlative Arm’s Adjustable Piston Gas Block. Superlative’s piston gas block is not only adjustable in a full 30 increments (it clicks, so you can feel those increments,) it’s a bleed off gas block, the only one of its kind. That means you’re not stuck with only adjusting simple restriction of gas flow, you can let off a little forward pressure to reduce blowback, noise, and heat from excess pressure. If you’re a suppressor guy, you’re going to love this. After all, we can all do with a little less soot, and hearing damage, right?
What’s in the Kit?
When you open your Superlative Arms Gas Piston Conversion Kit you’ll get The Superlative Arms Bushing and Insert Tool, the Hex Keys you need to adjust the gas screw and the gas block plug, a bolt carrier, and the piston block assembly. You’ll receive full instructions for installation as well as a QR code so you can zap it and get to a visual tutorial. For those of us who follow along a lot better in real time, then on paper, that’s almost priceless.
You can find the Superlative Arms Piston kit for sale at Wing Tactical in either Matte Stainless or Melonite finishes and four different available lengths. That’s right, not just one or two, you can get a Superlative Arms Piston Kit in Pistol, Carbine, Mid and full Rifle length. Whatever length your build or existing AR system is, Wing Tactical has the correct Superlative Arms Piston kit for sale right here. There’s no need to hesitate, go ahead, give yourself an edge.
Superlative Arms Piston System Installation
This piston kit comes with a receiver busing. You may elect to use it depending on the type of barrel nut you are assembling your upper with. Note: We have fully tested the system without the bushing and is not necessary for operation. Just an extra added feature that will help stabilize the piston rod when using a standard barrel nut (bushing installation tool provided).
Note: Make sure the weapon is unloaded before installation
1. Start with a barreled upper receiver (without the charging handle, handguard, bolt carrier group, muzzle device, existing gas block and gas tube).
2. Disassemble the piston block by removing the plug located at the top of the block with the 9/64 Allen key or a flat head screwdriver. Next, remove the rod and spring from the piston block.
3. Determine if the receiver bushing is needed
- If your barrel nut has a through hole (instead of a standard barrel nut) to accommodate the piston rod then the bushing might not be needed. Ensure the hole of the barrel nut aligns with the clover in the receiver.
- If you have a standard barrel nut then we suggest inserting the bushing (provided) into the clover of the receiver by using the bushing installation tool. Again, ensure proper alignment.
4. Loosen the piston block screws.
- Clamp-On Version: Loosen 3 clamping screws.
- Set Screw Version: Back out 2 set screws so they will not be touching the barrel’s exterior.
5. Carefully slide the piston block over the barrel until it stops at the shoulder.
- Clamp-On Version: If the piston block does not slide onto the shoulder freely, gently spread the clamp by using a flat head screwdriver. Do not apply excessive force.
- Set Screw Version: If the barrel is pre-dimpled, first determine if the dimple spacing is 0.5 from center to center. If not please contact your local gunsmith to ensure proper installation. (NOTE: This version requires dimpling for security.)
6. Insert the rod (without the spring) through the block, into the barrel nut, and through the clover in the receiver. Then, screw in the plug until it bottoms out.
7. Slide the piston bolt carrier provided inside the upper receiver. Push the carrier against the rod until it bottoms out against the barrel extension. You will notice the piston block moves slightly towards the muzzle end. Once you have done this start to lightly snug the piston screws in place (allowing for slight side to side movement while aligning the piston rod).
8. Align the piston rod inside the bore of the piston gas block until you are able to rotate the rod and move it back and forth freely.
9. Verify that the carrier is pushed firmly into position.
10. Remove the plug and rod. Insert your spring over the piston rod. Insert the rod back into the piston block then screw in the plug to its bottomed-out position.
11. Now unscrew the gas plug 180 degrees so the opening in the plug screw slot is oriented at approximately 6 o’clock. By rotating it 180 degrees this automatically sets the gap between your carrier and the rod.
Posted by BOB JANECEK on 11th Oct 2018
My biggest reason for going piston was because I primarily shoot suppressed and the back pressure causes a lot of carbon on my bolt of course but also the rounds in my magazine. I heard good things about this piston kit so me and a friend of mine each bought one. The instructions were well written but didn't come with illustrations so we watched a how to video online. It took about 45 minutes to disassemble our gas system and install the new piston conversion kit. If you can replace a gas block, you shouldn't have too much trouble installing this Superlative kit yourself. The next day we went to the range and after a few adjustments both our 6.5 Grendels we running clean, cool and with a little less recoil. We're both happy with our purchase.