See Post 9 for Version 2
The new K12 Puma that Lever Arms now sells does not have a manual yet.
So I wrote up this...
If you have one, can you review this and offer corrections, if required.
Thanks.
And does anyone know how to remove the bolt from the carrier? At first it looked like the cam follower should unscrew.
The cam follower has a slot in it for a slot screwdriver, but it easily rotates ever so slightly back and forth, then stops dead.
I suspect that the firing pin passes thru it.
So how do I get the firing pin out first?
Do I have to drive out a tiny roll pin first?
Anyway...
K12 Puma Dis-assembly
--As always, Safety First. Unload and Confirm Unloaded
--Remove magazine by pressing mag release button on either L or R side of magwell
--Pull charging handle to rear to cycle action. Bolt carrier will stay rearward, held by Hold Open Device.
--VISUALLY CONFIRM CHAMBER IS CLEAR
--Push bolt release (lever at rear of magwell) to allow bolt carrier to travel forward, thereby relaxing recoil spring.
--Pull trigger to release striker, to relax striker spring.
--Push rear takedown pin through from L to R. Pin is captive.
--A bullet tip of a cartridge can be inserted into hole in end of pin. A sharp hit with the heel of a palm is sufficient to start it moving.
--The Upper Rear buttstock can now be removed. Keep it under control, as it is still under spring pressure.
--Slide the striker assembly rearward along the receiver rails.
--Remove recoil spring from bolt carrier.
--The charging handle must be removed to allow the bolt carrier to be removed.
--The CH is held in place by a ball detent. A strong pull is required to remove it.
--Slide bolt carrier rearward along rails.
--Gas selector plug is located at the front of forearm, directly above the barrel. There are two settings depending on the load being fired.
-----A small hole is for powerful loads,
-----and a larger hole for light loads.
--By pushing the small pivoting part with the oval slot, the gas selector plug can be rotated. There is a small detent on the lower end of the pivot part, and two matching notches on the barrel assembly.
--Large hole (light loads) is detent to Left. Small hole (heavy loads) is detent to Right
--To remove plug, rotate plug to horizontal, with detent to gun Left only.
--With plug removed, the gas piston can simply be poured out by tilting the gun.
--To remove the front Lower handguard (including pistol grip and trigger group), push out forward takedown pin from L to R. This pin is not captive.
--Lower handguard can now be removed by pivoting downwards, then pushing slightly forward to unhook from hooks below barrel.
--Once trigger assembly is separated from the trigger bar (long thin flatbar), the sear pack can be removed rearwards. To do this ,the Safety selector must be rotated to point directly down, then pushed out from R to L.
--Once the Safety is removed, the sear pack and trigger bar can be slid to the rear.
Re-assembly
--Slide trigger bar partway into slot on L side of gun. Attach rear of trigger bar to pin on sear pack.
--Align holes in sear pack with holes in receiver.
--Insert Safety into hole from L side. Safety selector must be pointing down.
--Push in all the way, then rotate to 1 (Fire)
--Attach Lower handguard by hooking front end to two small hooks below barrel. Swing upwards, aligning holes in Lower with hole in receiver.
--Lower HG will probably need to be slid slightly rearwards as well. The molded plastic “wings” may need to be spread slightly as well to wrap around receiver.
--Insert forward non-captive takedown pin from R to L to lock Lower HG in place.
--Pull trigger to ensure trigger bar is connected properly. Watch for movement of sear.
--Insert gas piston into front of gas cylinder. Piston can only go one way. Offset shaft must be offset to the bottom.
--Piston will drop into cylinder approx. 3” or 8cm.
--Insert gas plug. Position plug horizontally, detent to L.
--Push pivot part in to rotate plug to either Large or Small gas setting.
--Insert bolt carrier from rear, riding on receiver rails. Forward part must align with matching opening in rear.
--The bolt carrier will go part way, then be held by Hold Open Device. Depress HOD lever to allow bolt carrier to move forward.
--Insert recoil spring into bolt carrier.
--Insert striker assembly onto receiver rails. Be sure rear of recoil spring engages front of striker assembly.
--Pull trigger to allow striker to move forward. Gently push on rear of guide rod to make striker pass over sear.
--Put Safety on Safe, then gently release pressure on guide rod. With gun on Safe, the striker will be held forward.
--Slide Upper buttstock onto receiver. Plastic wings may need to be spread slightly.
--Slide forward against spring pressure, until the rear takedown pin holes align with receiver hole. Push captive pin through.
--Replace charging handle.
--FUNCTION TEST.
The new K12 Puma that Lever Arms now sells does not have a manual yet.
So I wrote up this...
If you have one, can you review this and offer corrections, if required.
Thanks.
And does anyone know how to remove the bolt from the carrier? At first it looked like the cam follower should unscrew.
The cam follower has a slot in it for a slot screwdriver, but it easily rotates ever so slightly back and forth, then stops dead.
I suspect that the firing pin passes thru it.
So how do I get the firing pin out first?
Do I have to drive out a tiny roll pin first?
Anyway...
K12 Puma Dis-assembly
--As always, Safety First. Unload and Confirm Unloaded
--Remove magazine by pressing mag release button on either L or R side of magwell
--Pull charging handle to rear to cycle action. Bolt carrier will stay rearward, held by Hold Open Device.
--VISUALLY CONFIRM CHAMBER IS CLEAR
--Push bolt release (lever at rear of magwell) to allow bolt carrier to travel forward, thereby relaxing recoil spring.
--Pull trigger to release striker, to relax striker spring.
--Push rear takedown pin through from L to R. Pin is captive.
--A bullet tip of a cartridge can be inserted into hole in end of pin. A sharp hit with the heel of a palm is sufficient to start it moving.
--The Upper Rear buttstock can now be removed. Keep it under control, as it is still under spring pressure.
--Slide the striker assembly rearward along the receiver rails.
--Remove recoil spring from bolt carrier.
--The charging handle must be removed to allow the bolt carrier to be removed.
--The CH is held in place by a ball detent. A strong pull is required to remove it.
--Slide bolt carrier rearward along rails.
--Gas selector plug is located at the front of forearm, directly above the barrel. There are two settings depending on the load being fired.
-----A small hole is for powerful loads,
-----and a larger hole for light loads.
--By pushing the small pivoting part with the oval slot, the gas selector plug can be rotated. There is a small detent on the lower end of the pivot part, and two matching notches on the barrel assembly.
--Large hole (light loads) is detent to Left. Small hole (heavy loads) is detent to Right
--To remove plug, rotate plug to horizontal, with detent to gun Left only.
--With plug removed, the gas piston can simply be poured out by tilting the gun.
--To remove the front Lower handguard (including pistol grip and trigger group), push out forward takedown pin from L to R. This pin is not captive.
--Lower handguard can now be removed by pivoting downwards, then pushing slightly forward to unhook from hooks below barrel.
--Once trigger assembly is separated from the trigger bar (long thin flatbar), the sear pack can be removed rearwards. To do this ,the Safety selector must be rotated to point directly down, then pushed out from R to L.
--Once the Safety is removed, the sear pack and trigger bar can be slid to the rear.
Re-assembly
--Slide trigger bar partway into slot on L side of gun. Attach rear of trigger bar to pin on sear pack.
--Align holes in sear pack with holes in receiver.
--Insert Safety into hole from L side. Safety selector must be pointing down.
--Push in all the way, then rotate to 1 (Fire)
--Attach Lower handguard by hooking front end to two small hooks below barrel. Swing upwards, aligning holes in Lower with hole in receiver.
--Lower HG will probably need to be slid slightly rearwards as well. The molded plastic “wings” may need to be spread slightly as well to wrap around receiver.
--Insert forward non-captive takedown pin from R to L to lock Lower HG in place.
--Pull trigger to ensure trigger bar is connected properly. Watch for movement of sear.
--Insert gas piston into front of gas cylinder. Piston can only go one way. Offset shaft must be offset to the bottom.
--Piston will drop into cylinder approx. 3” or 8cm.
--Insert gas plug. Position plug horizontally, detent to L.
--Push pivot part in to rotate plug to either Large or Small gas setting.
--Insert bolt carrier from rear, riding on receiver rails. Forward part must align with matching opening in rear.
--The bolt carrier will go part way, then be held by Hold Open Device. Depress HOD lever to allow bolt carrier to move forward.
--Insert recoil spring into bolt carrier.
--Insert striker assembly onto receiver rails. Be sure rear of recoil spring engages front of striker assembly.
--Pull trigger to allow striker to move forward. Gently push on rear of guide rod to make striker pass over sear.
--Put Safety on Safe, then gently release pressure on guide rod. With gun on Safe, the striker will be held forward.
--Slide Upper buttstock onto receiver. Plastic wings may need to be spread slightly.
--Slide forward against spring pressure, until the rear takedown pin holes align with receiver hole. Push captive pin through.
--Replace charging handle.
--FUNCTION TEST.
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