Good afternoon everyone and welcome back to another edition of TFB’s Silencer Saturday brought to you by Yankee Hill Machine, manufacturers of the YHM Turbo K 556 rifle suppressor. Last week we explored the Prairie Tactical PTAC-BOLT rimfire suppressor. This week we continue the .22LR theme with a look at the B&T USA 22 Suppressor – a lightweight, inexpensive, and super quiet rimfire silencer. If you are in the market for a .22LR suppressor, buy it – you will not be disappointed. Hang on, so is today’s review over? I think not. Let’s add a twist and put this Swiss baby into full auto mode.
B&T @ TFB:
- TFB HANDS ON: The B&T TP380
- Pocket-size Cyberpunk SMG: The B&T TP380
- Incredible Swiss Folding Gun: The B&T BWC
- B&T USA Delivers Exclusive GHM9 SD Model to The Armories
- SILENCER SATURDAY #237: Back Pressure Beast – B&T USA 7.62 RBS Compact SF
Important Note: The National Firearms Act (NFA) regulates certain categories of firearms in the United States, including silencers and guns that fire more than one round with each pull of the trigger. Personally, I hate this law because I believe it is unconstitutional. However, until it is repealed or replaced, it is the law of the land. Do not attempt to make or transfer any NFA items without following all of your local, state, and federal laws. Be smart. Stay safe.
SILENCER SATURDAY #243: Full Auto Rimfire – B&T 22 Suppressor Review
It feels like today is B&T Saturday here at TFB. Our Swiss friends were kind enough to host James, Ryan, and Austin from TFBTV and TFB in Thun, Switzerland for a week’s worth of learning about the development and history of B&T firearms and suppressors. Including Karl Brügger himself.
The reason I posted the above note about the NFA is not because that I am trying to be a nanny; you are all adults and can make your own decisions. My statement is like a warning label on a pack of skittles flavored fentanyl pills – fully automatic rimfire shooting is like taking a powerful drug. Case in point, I ran outside at 0630 this morning for a simple function test. Two hours and 800 rounds later and I can’t remember what function I was supposed to test in the first place.
The extremely brief, yet positive review of the B&T 22 Suppressor of “buy it” is based on it being a very quiet suppressor on semiautomatic hosts, super light, and very affordable. But it is also because it is a bit of a black box when it comes to information. I can’t find a user manual or a parts diagram online. Although there are some spanner wrench holes in the mount cap and a hexagonal shaped bore on the blast baffle, I can’t seem to disassemble it for a closer look. So until I find out the official process for cleaning and disassembly, I am basing this review on the simple facts stated above – sound, weight, and cost.
Those of you that are concerned with heavy cleaning schedules may be turned off by the polymer and aluminum construction materials. It feels like it is an all aluminum assembly, so I am not sure where the polymer comes into play. However, I am 99% sure that there is a maintenance process for this rimfire silencer, I’m just not willing to risk damaging it in the process of figuring it out myself.
Let’s take a look at the numbers.
B&T USA 22 Suppressor
- Part Number: SD-988001-6-US
- MSRP: $315
- Manufacturer’s Page: https://bt-usa.com/products/22-suppressor/
- Buy @ Silencer Shop: https://www.silencershop.com/silencers/rimfire/b-t-22-suppressor.html
- Color: Black
- Finish: Anodized
- Material: Alloy/Polymer
- Caliber: .22 LR
- Attachment Options: Direct Thread
- Length: 5.5-inches
- Diameter: 1.2-inches
- Weight: 3.5 oz.
Here’s a look at the end cap – a simple design.
And a look at the mount section with the two spanner wrench holes.
We will be using a CMMG .22LR AR-15 conversion kit which is made up of a bolt/carrier/recoil system, .22LR magazines, and a select-fire sear trip and bolt carrier weight to help prevent bounce,
CMMG .22LR Conversion Kit
- Part Number: #22BA64E
- MSRP: $229.95
- Manufacturer’s Page: https://cmmg.com/22lr-ar-conversion-kit-echo-blk
- Buy at Brownells
- Buy at Palmetto State Armory
Below, the CMMG conversion kit consists of a bolt and a carrier that fits into any standard AR-15 upper receiver. An optional weight to prevent bolt bounce and a trip for the auto sear is required for full auto functionality.
The weight slides behind the bolt from the ejection port side. the auto sear trip saddles up to the bottom of the carrier and fits into two small notches in the rear section of the rails. the whole assembly slides into the receiver like a standard BCG.
The orange followers in the magazines act as a last round bolt hold open device. Each magazine holds 25 rounds.
CMMG recommends using 36gr round nose ammunition, but I was pleasantly surprised that the 40gr CCI Clean Subsonic rounds functioned flawlessly without a single failure. I was worried that supersonic or high velocity ammunition would be required to get the conversion running. It did take me a little while to find the right .22LR round – I would avoid any hollow point bullets, bullets with waxy coatings, or any ammunition that is not known for it’s consistency.
Using the timing of the video frames to estimate emptying a 20 round magazine, I calculate a cyclic rate of 1200 rounds per minute. But it feels a lot faster. Either way, a suppressed .22LR in a fully automatic host like this CMMG conversion kit and registered receiver is almost guaranteed to lift your spirits. Check out the quick video below,
Thanks for reading. Be safe, have fun, and we’ll see you next weekend for another Silencer Saturday.