Last shot hold open

[tacticool22]

The bolt release latch on the left side .You drive that pin out to get to the spring?

Yes, it is called the bolt catch pin. You don't even need to drive it all the way out. Use a 3/32" pin.

 

[bulldozerd8t]

Just got done pushing snow and ice on parking lots. Now I am going to trim my spring. Thanks for the information. When you first told me to trim spring it really did not make sense to me after you explained your theory now it makes sense. When somebody talks of trimming springs on the trigger or such I just vaguely read it because when I usually buy a gun I leave it factory. Unless it does not function properly like in this case.

Well I trimmed the spring. It might be a little while before I see if it worked. Snowing again.

 

[bulldozerd8t]

I trimmed about .050 inch or almost 1mm off the bolt catch spring. Or 1 and 1/2 turns.
It dropped the preload to nearly nothing, so the magazine spring does not have to work as hard. 100% so far.
Don't trim too much off or the catch will rattle. Put the trimmed end in first so the factory end is against the shoulder of the bolt catch plunger.

Tacticool; I needed to listen to you sooner. After working till 2 am this morning and getting a little sleep, I just had to try out this mod I did on my 15-22. I only put 5 rds in my 3 mags and shot the 3 mags twice. Every last shot the bolt stayed open even under rapid fire. Happy days are here again !!! THANK YOU

 

[tacticool22]

Tacticool; I needed to listen to you sooner. After working till 2 am this morning and getting a little sleep, I just had to try out this mod I did on my 15-22. I only put 5 rds in my 3 mags and shot the 3 mags twice. Every last shot the bolt stayed open even under rapid fire. Happy days are here again !!! THANK YOU

I'm glad it worked for you too. Spread the knowledge.
It's a super simple fix at the factory, all they have to do is put a longer core pin in the mold.

 

[bulldozerd8t]

I am so pleased with the fix tacticool 22 told me to do that I have to post 1 more time. With the blue springs and bolt catch spring trimmed my M&P 15-22 ran flawlessly today !!!!!!

I did a lot of 5rds in the mag to get to the last shot hold open feature so I didn't have to shoot a thousand of rds.
I shot different ammo, fed bulk,510b,510,automatch,
Winchester bulk,wildcats,Armscor Precision sv & hv,CCI mini-mags hp & rn,CCI sv,wolf MT,Aguilla,pmc zappers,blazers,
eley,thunderbolts and peters. THE GUN RAN FLAWLESSLY !!!!
No jams,fte,ftf and the bolt held open every time. This definitely was the fix for the bolt hold open feature. Thanks again Tacticool22. HAPPY SHOOTING

 

[Duckslayer12]

Thanks for the information on the mod Tacticool22 and thanks for bringing this problem up for discussion Bulldozerd8t. I was having the same problem with my 15-22 where the bolt would only hold open half the time. I just completed the mod and I will do some testing on it tomorrow and I will let you guys know how it does.

 

[bulldozerd8t]

Thanks for the information on the mod Tacticool22 and thanks for bringing this problem up for discussion Bulldozerd8t. I was having the same problem with my 15-22 where the bolt would only hold open half the time. I just completed the mod and I will do some testing on it tomorrow and I will let you guys know how it does.

Yes keep me updated it sure fixed mine.

 

[Duckslayer12]

Well I shot 100 rds today. 20 clips of 5rds a piece. Sometimes shooting slow and others rapid fire. Held open 19/20 clips and the one it didn't hold open on, I noticed my hand was putting pressure on the clip. Overall im 100% positive the problem is fixed!!

 

[bulldozerd8t]

Well I shot 100 rds today. 20 clips of 5rds a piece. Sometimes shooting slow and others rapid fire. Held open 19/20 clips and the one it didn't hold open on, I noticed my hand was putting pressure on the clip. Overall im 100% positive the problem is fixed!!

I also shot mine today and the only one it did not hold open was I was using the mag as a rest.

 

[tacticool22]

Good insights as to what are other problems. So far it looks like 3 things.
1) Holding the mag well and your hand touching the bolt release.
2) Holding the magazine.
3) Using the magazine as a rest.
So I guess we need to not touch the magazine area at all and everything should be fine.

 

[bulldozerd8t]

Went out yesterday with 2 teenagers and we shot my M&P 15-22. A 1000 rds later and my 15-22 held open the last shot 100%. Shooting blazers and federal automatch. The boy's had a blast, so did I.

 

[Duckslayer12]

Glad to hear it's working perfectly bulldozer. I have run a few more 'mags' through mine with 100% success rate. What an easy and effective modification!

 

[bulldozerd8t]

Shssssss they don't like somebody calling the mag a clip, I'll keep it quite.(Ha ha) Glad yours is fixed too !!! Happy shooting

 

[Duckslayer12]

There we go!

 

[bulldozerd8t]

Since I had new springs put in.... the bolt hold open works about 50%. It used to work just fine with the old springs. I really don't care one way or the other. I have learned to accept my 15-22 as an enigma.

Phil ,No. 10 post is where tacticool 22 tells the mod to do ,you will not be sorry.

 

[tacticool22]

We loaded anywhere from 1 to 10 rounds per mag. Slow to fast fire.
A few people loading and somebody shooting all the time. Constantly switching shooters for different styles and not one single problem. A thousand rounds makes for a BUNCH of mag changes.
It was a great execise for control. Dropping empty mags, loading new ones, noticing when the rifle was empty without having to look. No dry fires at all.
No stovepipes or other jams, so no clearing drills. Sure made for a fast fun day.

 

[mrasgt]

Bolt Hold Open

Gentlemen,

I guess I must have gotten lucky{so far}, I have a DAV 18--.

I've put around 1000 rounds of everything you can imagine through the gun. This using five mags.

I have not had one hiccup, even with the remmy's. Bolt hold open has never been a problem.

I am a clean fanatic, so it gets cleaned after every use, just like my Bushy AR and every weapon I've ever handled. That may be a habit from having to carry and depend my life on a weapon every day, all my life. { there's something wrong with that last sentence, sorry}.

I hope I haven't jinxed myself with this. For the life of me, I can not picture this spring location.

I use a bore snake, very mindful of not letting the snake catch on anything, works perfectly, first time I have ever used one, sort of old fashioned with the patches, brushes and rods, I guess. Starting to show my age.

Oh, yea, I absolutely love the new Tactical .22 by CCI, there is a real difference in feel. This is the first time I have ever endeavored to own over 2,000 rounds of anything except my 223. That's getting more and more expensive every day, pisses me off.

I just added a rubberized 4 by 32 Leapers duel color scope, so I get to start all over again sighting it in. Problem is, it's +4 degrees here.

This is such a neat gun to shoot.

Mark

 

[tacticool22]

mrasgt. The bolt release latch on the left side has a spring under the area shown in the pic

 

[mrasgt]

tach

ummmm....dahhh, thanks, do I feel stupid.

Mark

 

[odk]

Did this alteration last night, range today, all is good no more annoying problem. thanks guys.