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These seem nicely made, but are way undersize... a tiny bit narrow (which isn't so bad), but the distance from the base to the shoulder is at least 1mm shorter than a real round, so it sits too far down in the chamber for the extractor to reach it (this is the .223/5.56 version). This makes them useless for testing... I'm not even sure the firing pin touches the silicone "primer" when dry firing. Not worth the effort to return them for $8, I'll just use them for key fobs. Conveniently for that purpose, they are already cross-drilled near the base.
by
Enthusiastic gunner,
from CA, United States
Written on June 27, 2023
Not very accurate to detail compared to the real 300 blk out ammo. It’s bit to small. It might damage my bcg if I use it as a practice ammo. Please try to make it as to match the real 300blk out. And the price is not very reasonable. It also took a while for them to ship it. It was out of stock for almost three mos.
Would recommend: No
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by
Vector sucks,
Verified Owner
from WA, United States
Written on January 3, 2022
I must have just bought these before the recent reviews, they've been sitting in my range bag for a while. These were a terrific price vs the a-caps that I normally buy for 223. However, these pieces of junk are not sized correctly. They do not extract & jammed every time. Initially I was loading two or three to a magazine, but got the toughest double feed I've ever had as my bolt carrier ripped into & got stuck in the side one of the snap caps trying to feed. After cutting my finger trying to pry lose the disfigured snap cap I had to use a screwdriver to hack & pry the snap cap clear...poor Betsy won't be able to have little ones now.
Then I tried using a single snap cap with different magazines. They all jammed or failed to extract. Stay away from these Chinese knockoffs.
Best Used for:
Selling to guillible cheapskates like myself
Would recommend: No
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by
A. R. Bilden,
Verified Owner
from NC, United States
Written on September 9, 2021
The .300 dummy rounds are not the proper dimensions. If they're not accurate to the actual round, they're no good for function testing. They may not be totally useless, but they are for me. Would give zero stars if I could.
Pros:
None
Cons:
Bad design
Useless
Wrong size
Best Used for:
Garbage
Would recommend: No
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by
CS,
Verified Owner
from FL, United States
Written on October 22, 2020
5.56/223 cap. Same issue as a previous reviewer. Due to the shaping of the cartridge near the base, the extractor cannot capture and eject the round. This was experienced in my AR-15 with a standard BCM bcg. They are fine for loading a magazine, but when you dry fire and go to extract, you will have to dig the round out of the chamber yourself. As the other poster said, they are useless when doing firearms instruction!
Pros:
Practice loading magazines
Cons:
Will not extract
Would recommend: No
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