Hey, great to hear from you again. I am in love with the
M16 Viper and am kicking around buying another Viper for
my other lower.
You build the best M16 I have ever fired.
For such a short barreled weapon its rate of fire is
very user friendly.
Let me know if you could build another one for me and
what kind of time frame?
Coconut Grove P.D. SWAT
2004 NTOA Conference attendee of M16 Clinic's Lecture:
"Advanced Armoring M16s". Orlando, Florida
(As posted on SWAT forums, National Tactical Officers
For anybody incurring M16, M4, AR15 problems, this is
Over the past couple of months, I experienced a myriad
of problems with my rifle (16" LE). I took it to
an armorer, allegedly a master armorer, supposedly
capable of fixing problems. He replaced some gas
rings, and a little spring or two more as a maintenance
action, and said he couldn't find anything wrong with
it. The rifle continued to fail.
contacted Greg Leaf, owner of M16 Clinic, and sent him
my upper, bolt, charging handle, buffer, four casing
from malfunctions and the action spring. When told
of training I would soon be conducting, he cleared his
bench to get my weapon done. In no time at all, Greg had
identified FOUR major problems, done extensive test
firing of the weapon, replaced needed parts, reset the
headspace, and shipped the upper back to me with
startlingly detailed reports on all of the work
the broken/replaced parts came back in sealed plastic
bags marked with what the problem had been, while the
upper itself was painstakingly repacked to protect it
during shipping. Greg also included a couple bits of
swag for each student in my course. I took the
upper out this weekend and tried my best to make it jam
from either heat, or sustained firing. It functioned
you have business in this realm, give it to Greg Leaf at
M16 Clinic (email@example.com ). You won't be sorry.
BCH @ D.O.E.
PITKIN County, Colorado
I received the Viper-XRP and managed to get out to our
range this week.
weapon fires great and prints paper even greater!
I remounted my Holosite and zeroed it at 100 yards from
the bench, then moved to off-hand shooting, shooting
while moving, prone and kneeling. The weapon
consistently shot sub-moa from the bench; less than 2
MOA standing and moving.
and bolt carrier are great. The weapon is very solid and
lacks that rattle most stock AR or M series weapons
have. Locking back on an empty magazine has a really
solid feeling. Very little muzzle jump, and the sights
come right back to center.
I am very
satisfied with the Viper-XRP and recommend it to every
G. F. K.
Deputy, Pitkin County Sheriff’s Office Aspen, Colorado
I just fired the Viper and it is fantastic in every way.
The reduced recoil was noticeable from the first round.
my Acog on top, zeroed with no problems and hit a bottle
cap at 40 meters.
It feeds smoother than anything I have fired. No double
feed issues or failure to eject issues. Just a pleasure
I feel much more comfortable taking the VIPER out on the
road than anything I have carried here in Iraq.
The chromed bolt carrier group cleans up easier; which
is always nice. I fired 90 rounds on semi and four
bursts on auto from a 30 round mag with no issues. I did
notice the rate of fire is slower and smoother than my
other 7.5 inch upper which fired so fast on auto it
jammed constantly, not to mention being totally out of
The Viper is so well tuned and controllable, it is
It was a pleasure doing business with you.
I will send photos and video later.
I just fired 150 rds through the Viper you built for me
and it functioned flawlessly. The accuracy is
outstanding and the workmanship top notch. Your customer
service is the best in the Industry. The jpeg
photos you emailed sent during construction convinced me
that you and your equipment are indeed as advertised.
10TH SPECIAL FORCES
FOB -----, Somewhere in the Sandbox
This is some Damn Hot Equipment!!! You are the
Samurai of M16s!
I cant take my hands off of the M16 VIPER and everyone
that sees it is going crazy with a case of VIPER envy!
The build quality is the best I have ever seen and the
whole weapon all together doesn’t have a single rattle
which I have always sought after with a passion.
I got the
goodies you sent and gave Mike his package and he said
that it makes him feel good to think that there are
people out there that pay attention to us and not just
the conventional forces. He appreciates the gifts.
I told him that it was from a guy who is very in touch
with SOF and how they operate and understands their
hardships from a touch of training himself. He liked
that too. Anyways I can’t wait to send you VIPER
pics showing history in the making with my M16 VIPER.
Ps. The M16 VIPER is better then I could have ever
imagined. It’s the stuff sci-fi and video games are made
2004 City of Georgetown
to let you know how much we appreciate your correcting
the problems we had with our M16s. Soon after the
barrels were shortened, we experienced a multitude of
reliability issues. Even prior to that, accuracy
was only adequate. After only a few days at the M16
Clinic, our uppers came back home with a “new attitude”.
skills and dedication became apparent as soon as we got
some range time. We now shoot tighter groups, more
so than ever before, and the cycling problems are gone!
Prior to sending them to you, these M16s were restricted
to entry use only. With the levels of accuracy you
achieved, we now use them in additional roles of
perimeter and sniper/observer positions.
Being a small department with an ever-shrinking budget,
you saved our agency several thousand dollars we
couldn’t afford to spend. We considered buying new
equipment as replacements. M16 Clinic’s work made
the replacement issue unnecessary. Our thanks to
you for your outstanding work and quick turn-around
recommend M16 Clinic and its services to agencies and
Special Operations Teams in need of improved accuracy
and total reliability.
Special Operations Team
City of Georgetown, South Carolina
I just zeroed the custom, M16 VIPER you built for me.
I zeroed at 50 yards and shot it out to 150 yards.
yards the group was the size of a dime.
At 100 yards the group was the size of a nickel.
At 150 yards all three rounds were touching within a
dime size group.
Clark, The Steele Foundation, Presidential Security
Palais National, Port-au-Prince, Haiti
USMC Scout Sniper School & Advanced Scout Sniper
I've had the pleasure of doing business with Mr. Leaf
for several years. His ideas for perfecting the
M16 and taking it to places it has never been are
inspirational, as is his workmanship. His uppers
are habit forming. Peering under the hood of one
of these transformed uppers is similarly stimulating.
The work is flawless. He and his Clinic represent
the apex of research and development of M16/AR15
You are the M16 KING when it comes to M16 Knowledge. I
would send anyone of my customers to you in a heart
beat, and am sold American when it comes to the M16
James Cook, C.E.O.
Palm Bay, FL
2003 Town of Jackson Police Department, Tactical Team
Thank you very much for the quality job you did on our
two M16 uppers. The Tactical Match went great with
NO jams! We will recommend M16 CLINIC to everyone
else in the tactical community.
Pranzo, Asst. Team Leader,
Jackson Hole Tactical Team
Jackson Hole, Wyoming
Presidential Palace, Port-Au-Prince, Haiti
to the range.....25 cent piece shot groups at 25 meters!
She be zeroed!!
VIPER does all you said, and more..... They work just
job, many thanks........I already have a warm and fuzzy
feeling with my M16 VIPER.
Sharon, Presidential Protection Unit,
100 East Second St.
Department purchased four Bushmaster M-4s for our
Special Response Team. We sent these rifles back to
Bushmaster to have 11.5 inch barrels installed. We had
continuous double-feed problems with each one. I began
to search for an answer and was told to contact you at
the M16 Clinic. After a couple of conversations, I
shipped all four uppers to the M16 Clinic. You said it
would be a one-week turn-around for the work on all four
of the uppers.
surprise, we had all four uppers (the “Four Horsemen”)
back in about four days. We were amazed at the
difference in our weapons on the very first day at the
range. They all performed EXACTLY as you said they
would; we had no malfunctions. We have since been all
over our County and State pushing rounds through our
“Leaf” modified Bushmasters.
count amongst the Four Horsemen we have fired
approximately sixteen thousand (16,000) rounds total, or
about four thousand (4,000) per weapon. We have used
every kind of .223 ammo that we could get our hands on,
and WE HAVE NOT EXPERIENCED ANY MALFUNCTIONS OF ANY
training occurs no matter what the weather or the
environment. Greg, you are a man of your word. Your
expertise with the repairs of our weapons is evident.
There is no doubt that the work and concern you put into
our weapons have made me and the other operators that
carry the “Four Horsemen” more confident, more accurate,
and more efficient.
very grateful to you. When we bring more .223s to our
Team, they will spend a week at the M16 Clinic first.
Take good care of yourself.
Thanks for the great service! It runs GREAT & is very
controllable. If we have any future problems I will send
you more jobs.
Deputy, United States Marshals Service
Dept. of Justice, District of Oregon
2002 City of Long Beach Department of Police
for the two pigtails. They were won as prizes at the
2002 WORLD 3 GUN CHAMPIONSHIP in Las Vegas, Nevada.
Thanks for the generous gift and your support of the
shooting sport. To receive a prize that can be
used by our SWAT Team is appreciated.
Officer Bob Correia / SWAT
Long Beach Police Department, Long Beach, Ca 90808.
Went to the range yesterday! After TWO YEARS of
fighting this little monster and spending a small
fortune, we have lift-off. I wish I knew about you 2
years ago, I could have saved a great deal of money and
a ton of frustration. The gun fired flawlessly! I
fired an entire C-Mag (100 rounds) without a jam or
mishap. That is really impressive considering that
the gun has never fired more than 5 rounds with a
for all of your help, I am impressed!
It kicks ass, 'Nuff said......
You rock dude, and I will be using your services again
in the future.
I fired over 2,000 rounds (1,100 without cleaning) with
NO malfunctions! The Bench Package conversion
makes my 10” Bushmaster work like I never thought it
would. Special recoil springs, modified buffers,
different bolts -- I tried them all. Nothing makes it
work the way your piggie does. The recoil is lighter and
East Point, Georgia
2002 Rock Hill Police Department, Rock Hill, South
used M16 CLINIC's services and products for over a year
now. Greg and I met over the telephone as a result
of my search for a solution to a problem I was
experiencing with short recoil, failure to feed and
failure to eject on a 6.50 inch barrel Entry Upper. From
our first conversation, I knew Greg speaks from
experience. The man clearly understood the problems
L.E.O.s were facing and what all it took to make a short
barrel .223 system function reliably.
Cinic’s basic Shop Package is great! The attention
to detail in hand fitting and tuning of uppers is
unbelievable. My Entry weapon now functions reliably
with all the empty cases ejected into a neat pile. An
additional benefit I found is the reduced cyclic rate in
Full Auto. It allows single shot squeezes in Full Auto.
closing, I have found Greg Leaf to be a man of his word
who has consistently gone above and beyond in his
business dealings. This is uncommon today.
Detective, Rock Hill Police Department, SWAT
Rock Hill, South Carolina
I own a
retail firearms operation here in Baton Rouge & we place
a very high importance on customer satisfaction. Our new
goal will to be to strive for the level of excellence
you have afforded me!! This is "hands down", the best
customer service that I have ever received (and worth
following reasons are why I will refer people to you and
M16 Clinic in the future:
2) Extremely knowledgeable & informative
3) Very friendly
4) Excellent packing & quick shipping
5) Very fast turn-around time
6) Keeps customer updated on status
7) Top notch warranty
8) M16 PIGTAIL WORKS!!!!!!!!
certainly hope to do business again in the future!!
Precision Firearms & Indoor Range Baton Rouge, Louisiana
My customers are very pleased with your product.
So many have called to let me know that the “Pigtail” is
terrific. I will continue to send everyone
purchasing Pistols & Barrels to you.
ANN @ M &
been fighting with the 7.5" upper on my M16A1 for a
while now and could never get it to function reliably.
Finally I gave up and sent it off to a pro, Greg Leaf at
M16CLINIC. He diagnosed several problems with my
upper: one was the barrel. He recommended and installed
a new barrel. Greg is a pleasure to deal with,
answers all E-mails quickly and only took a couple days
to do my install.
I got out
today and shot the upper, well it works! It rips
through magazines like a raped ape! Well I love
the Pigtail, and from my experience I really don't know
how you can get a pistol upper to run full auto without
Oct. 06, 2001 TX, USA
Well, you have found the secret to getting pistol uppers
to function. I will not put a pistol upper together for
anyone unless I use a Pigtail. With the Pigtail the rate
of fire is slower and there is no slamming of the bolt
carrier into the back of the buffer tube.
has really developed a great product that allows us the
reliability and controllability that we need out of
these little shorties.
the Class III's that I know that have dealt with him
have had nothing but praise for both him and his
Alamo Professional Arms
Dear Mr. Leaf,
recently installed one of your M16Pigtails in a friend’s
10" barrel M-16. This 10" upper never worked properly,
like so many of them, from the time that he purchased
it. The owner, extremely frustrated, had gotten to the
point where he didn't know what to do. We
installed the pigtail, a simple operation even we could
do, and gave it a try. Much to our amazement not
only did the upper suddenly work, but it ran
flawlessly!! Rate of fire is now lower and
controllability is excellent.
for a fine product that actually works!