Bolt carrier disassembly

To remove the bolt, cam pin and firing pin simply press out the firing pin pin from the right side with a small tool or a cartridge. Remove the firing pin from the back of the bolt carrier, you may need to tap the bolt carrier or move the bolt in and out to get the firing pin to fall out enough to grip it. With the firing pin removed the cam pin can now be pulled out and with the cam pin out the bolt can be removed from the front of the carrier.

To remove the piston head, recoil spring tube,

To remove the piston head, recoil spring tube,

Benelli Recoil Tube Removal

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and recoil spring first align the holes in the recoil spring tube with the pin in the piston head. While holding the piston head with one hand, press out the piston pin with the firing pin or a small tool.

CAUTION: the piston head is under pressure from the compressed recoil spring and the piston head and recoil spring can easily fly out and injure yourself or bystanders, always keep a hand on the piston head and point the piston head in a safe direction when removing it.

With the piston pin removed the piston head is

With the piston pin removed the piston head is

16c Gas Tube

now free to be taken off. Slide the recoil spring tube off the piston rod and remove the recoil spring from the recoil spring tube.

NOTE: It is not recommended that you disassemble the stock of the SU-16 rifle; the hammer spring is constantly under tension and can easily injure you or others.

ASSEMBLY

Bolt carrier assembly:

To install the piston head, recoil spring tube, and recoil spring insert the recoil spring into the recoil spring tube. Slide the recoil spring tube with recoil spring onto the piston rod. Align the holes in the recoil spring tube with the hole in the piston rod. Push the piston head onto the recoil spring and onto the piston rod. Insert the firing pin or similar tool into the piston head hole to temporarily hold the piston head in place. While slowly pulling out the firing pin push in the piston pin from the other side until it is flush with the piston head. Twist the recoil spring tube so that the locking tab points towards the top of the bolt carrier. Check the operation of the recoil spring by lightly pulling on the recoil spring tube to compress the spring.

To install the bolt, cam pin, firing pin, and firing pin pin insert the bolt into the front of the bolt carrier. Twist the bolt so that the extractor is on the right side of the carrier and the cam pin hole in the bolt lines up with the cam pin slot in the bolt carrier. Insert the cam pin into the hole in the bolt, be sure that the tab on the cam pin is pointing straight out the left side of the bolt carrier. Insert the firing pin into the back of the bolt carrier, if it does not go in all the way the cam pin or the bolt may not be inserted correctly. Push the bolt assembly into the carrier as far as it will go and then insert the firing pin pin into the bolt carrier from the left side. DO NOT FORCE THE FIRING PIN PIN. If it does not go in easily check that the firing pin is installed correctly. Check the operation of the bolt and firing pin to be sure that they move freely.

Rifle assembly

With the rifle stock folded and the bipod unlatched rest the rifle on its left side. Take the bolt carrier assembly, pull the bolt out as far as it will go and twist the recoil spring tube so that the lock tab is at the top of the bolt carrier. Insert the carrier from the rear of the receiver, be sure not to twist the bolt tube or push in the bolt as you insert it. Align the operating hole in the carrier with the cut-out in the receiver and insert the operating handle. Push the carrier up slightly so that the operating handle aligns with the slot for it and the recoil spring tube is parallel with the barrel of the rifle.

WARNING: if the recoil spring tube is not parallel with the barrel of the rifle the bolt carrier assembly is not installed correctly. Remove the carrier assembly and install it again paying close attention to the alignment of the lock tab on the recoil spring tube as you insert the carrier and also be sure that the bolt itself is always in the forward most position as you insert the carrier assembly into the receiver.

Check that the forend lock ring is aligned correctly and push the operating handle all the way forward, be sure that the piston head lines up and goes into the gas head. Grip the recoil spring tube, pull it forward and twist it %turn so that the locking tab on the recoil spring tube goes into the receptacle on the left side of the receiver. Pull the operating handle back and forth to check that it moves freely, if it does not take out the bolt carrier and check to make sure everything is installed correctly and nothing is damaged. Close the bipod and unfold the stock. Insert the assembly pin into the hole and press it in until it is flush with the outside of the stock.

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Responses

  • sirja
    Does the firing pin protrude on the su16?
    6 years ago
  • Tanta
    How to install piston rod into bolt carrier kel tec?
    6 years ago

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