+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Forster Rimmed & Belted Headspace Gage Up to 24% Off — 54 models

Forster Rimless Headspace Gage, NO GO length, for 300 Blackout, HG0300N
Forster Rimless Headspace Gage, FIELD length, for 30 Carbine, HG0030F
Forster Rimless Headspace Gage, GO length, for 223 Rem, HG0223G
Forster Rimless Headspace Gage, GO length, for 22, 250 Remington, HG2225G
Forster Rimless Headspace Gage, NO GO length, for 300 Blackout, HG0300N
1 of 4 images
Forster Rimless Headspace Gage, NO GO length, for 300 Blackout, HG0300N
Forster Rimless Headspace Gage, FIELD length, for 30 Carbine, HG0030F
2 of 4 images
Forster Rimless Headspace Gage, FIELD length, for 30 Carbine, HG0030F
Forster Rimless Headspace Gage, GO length, for 223 Rem, HG0223G
3 of 4 images
Forster Rimless Headspace Gage, GO length, for 223 Rem, HG0223G
Forster Rimless Headspace Gage, GO length, for 22, 250 Remington, HG2225G
4 of 4 images
Forster Rimless Headspace Gage, GO length, for 22, 250 Remington, HG2225G

Tap Tap to Zoom

You May Also Like
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
(54)
List: $12.95 $11.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
(34)
List: $14.95 $13.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
(48)
List: $17.95 $16.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 30 Round, Black, 1 Pack, Polymer, MAG800-BLK-30RD
Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 30 Round, Black, 1 Pack, Polymer, MAG800-BLK-30RD
(40)
List: $15.95 $14.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
(25)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 20 Round, Black, 1 Pack, Polymer, MAG1182-BLK-20RD
Magpul Industries PMAG GEN M3 AR-15 Rifle Magazine, .300 Blackout, 20 Round, Black, 1 Pack, Polymer, MAG1182-BLK-20RD
(15)
List: $15.95 $14.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(34)
List: $14.95 $13.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Medium Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(48)
List: $17.95 $16.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
(12)
List: $15.95 $14.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
(12)
List: $22.95 $20.45 Save Up to 11%
Questions & Answers
Does this Forster Rimless Headspace Gage, NO GO length, for 223 Rem also work for 5.56? Manufacturer Answer

Yes, the 223 No Go will provide length information on a 5.56 as well.

by Forster Products, Manufacturer, March 26, 2025
See 2 More Answers
are these the correct gages to use for 223 Wylde Expert Answer

The three options marked for .223 Rem will work.

by Ethan C., Gear Expert, March 20, 2019
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great product, would recommend by jamestday, Verified Owner, June 18, 2018
Starting 4th build and decided it's time to head-space all my AR's - new and old. I've never had any issues, but for the cost to know for sure you are withing spec, it's really something everyone who builds or swaps bolts, uppers, etc. should have (...
Read More...
5/5 found this helpful
Helpful Positive Review
Quality headspace gauage by Brian T, Verified Owner, May 26, 2020
This is my second set of Forster headspace gauges that I have purchased. The first set was for a .223 Wylde chambered build and used 223/5.56 gauges. Most recently, I also Purchased the Forster Go and No Go gauges for .300 Blackout build. No issues w...
Read More...
1/1 found this helpful
Helpful Positive Review
Head space gauges by K1847, November 28, 2017
Best tools when a new barrel is being to your rifle. Best used with an A15 or SR25. Simple to use, just follow the instructions provide with each gauge. Have fun with your next build. It is recommended toe gauge your new barrel before installation.
1/1 found this helpful
Most Recent Reviews
Forster Rimless Headspace Gage — NO-GO Length Headspace Gauge. by Bulls Eye, March 27, 2026
Good, reliable tool for a fundamental safety check of rimless cartridge chambers; recommended for builders and serious handloaders as part of a proper headspace-checking procedure, but not a substitute for measurement tools or professional gunsmith i...
Read More...
Most Recent Reviews
Go, No go Gauge by Robert Graziano, Verified Owner, November 30, 2025
These make barrel install a hassle free project. They arrived in great packaging and shipping was quick.
Most Recent Reviews
Great item, quality and fast shipping by Robert Graziano, Verified Owner, November 30, 2025
These go, no go gauges are great and make barrel install easy.
Read All 21 Reviews
Show In Stock Only
54 Models Available
Length
All
Caliber
All
Search
Purchase Restrictions Purchase Restrictions

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Forster Rimmed & Belted Headspace Gage

Headspace is the distance between the face of the breech and the base of the cartridge when the action is closed, and excessive headspace can be dangerous as well as impair accuracy. For instance, unsupported brass fired in a rifle action with excessive headspace can rupture, allowing gas to blow rearward like rocket exhaust. Because your safety is on the line, Forster Headspace Gages are made with painstaking care and exacting manufacturing standards to ensure accurate testing of your rifle's chamber.image

If a rifle closes on a GO gage, the rifle chamber will accept any ammunition that is made within SAAMI (industry standard) specifications. If a rifle closes on a NOGO gage, the rifle chamber might have excessive headspace. Most gunsmiths chamber a rifle's headspace between the GO and NOGO dimensions. If a rifle closes on a FIELD gage, the rifle chamber is dangerously close to or already over the SAAMI specified maximum chamber size.

Specifications for Forster Rimmed & Belted Headspace Gage:

Manufacturer: Forster
Fabric/Material: Brass
Color: Black
Quantity: 1
Country of Origin: USA

Package Contents:

  • Forster Rimmed & Belted Headspace Gage

Forster Rimmed & Belted Headspace Gage Orderable Models

List of Orderable Models

  • Forster Rimless Headspace Gage, NO GO length, for 300 Blackout, HG0300N , MPN: HG0300N , UPC: 757253992117 , Code: 2RJ-HSG-FRRLHSGE-HG0300N
  • Forster Rimless Headspace Gage, FIELD length, for 6.5 Creedmoor, HG65CRF , MPN: HG65CRF , UPC: 757253992131 , Code: 2RJ-HSG-FRRLHSGE-HG65CRF
  • Forster Rimless Headspace Gage, NO GO length, for 6.5 Creedmoor, HG65CRN , MPN: HG65CRN , UPC: 757253992148 , Code: 2RJ-HSG-FRRLHSGE-HG65CRN
  • Forster Rimless Headspace Gage, GO length, for 243 Win Gage, HG0243G , MPN: HG0243G , UPC: 757253004339 , Code: 2RJ-HSG-FRRLHSGE-HG0243G
  • Forster Rimless Headspace Gage, NO GO length, for 243 Win Gage, HG0243N , MPN: HG0243N , UPC: 757253004346 , Code: 2RJ-HSG-FRRLHSGE-HG0243N
  • Forster Rimless Headspace Gage, GO length, for 223 Rem, HG0223G , MPN: HG0223G , UPC: 757253004292 , Code: 2RJ-HSG-FRRLHSGE-HG0223G
  • Forster Rimless Headspace Gage, NO GO length, for 223 Rem, HG0223N , MPN: HG0223N , UPC: 757253004308 , Code: 2RJ-HSG-FRRLHSGE-HG0223N
  • Forster Rimless Headspace Gage, FIELD length, for 223 Rem, HG0223F , MPN: HG0223F , UPC: 757253004285 , Code: 2RJ-HSG-FRRLHSGE-HG0223F
  • Forster Rimless Headspace Gage, FIELD length, for 300 Blackout, HG0300F , MPN: HG0300F , UPC: 757253992100 , Code: 2RJ-HSG-FRRLHSGE-HG0300F
  • Forster Rimless Headspace Gage, GO length, for 6.5 Creedmoor, HG65CRG , MPN: HG65CRG , UPC: 757253992155 , Code: 2RJ-HSG-FRRLHSGE-HG65CRG
  • Forster Rimless Headspace Gage, GO length, for 300 Blackout, HG0300G , MPN: HG0300G , UPC: 757253992124 , Code: 2RJ-HSG-FRRLHSGE-HG0300G
  • Forster Rimless Headspace Gage, FIELD length, for 30 Carbine, HG0030F , MPN: HG0030F , UPC: 757253004193 , Code: 2RJ-HSG-FRRLHSGE-HG0030F
  • Forster Rimless Headspace Gage, GO length, for 30 Carbine, HG0030G , MPN: HG0030G , UPC: 757253004209 , Code: 2RJ-HSG-FRRLHSGE-HG0030G
  • Forster Rimless Headspace Gage, GO length, for 30, 06 Springfield, HG3006G , MPN: HG3006G , UPC: 757253004636 , Code: 2RJ-HSG-FRRLHSGE-HG3006G
  • Forster Rimless Headspace Gage, GO length, for 22, 250 Remington, HG2225G , MPN: HG2225G , UPC: 757253004544 , Code: 2RJ-HSG-FRRLHSGE-HG2225G
  • Forster Rimless Headspace Gage, NO GO length, for 22, 250 Rem, HG2225N , MPN: HG2225N , UPC: 757253004551 , Code: 2RJ-HSG-FRRLHSGE-HG2225N
  • Forster Rimless Headspace Gage, FIELD length, for 243 Win Gage, HG0243F , MPN: HG0243F , UPC: 757253004322 , Code: 2RJ-HSG-FRRLHSGE-HG0243F
  • Forster Rimless Headspace Gage, GO length, for 257 Roberts, HG0257G , MPN: HG0257G , UPC: 757253004421 , Code: 2RJ-HSG-FRRLHSGE-HG0257G
  • Forster Rimless Headspace Gage, FIELD length, for 22, 250 Rem, HG2225F , MPN: HG2225F , UPC: 757253004537 , Code: 2RJ-HSG-FRRLHSGE-HG2225F
  • Forster Rimless Headspace Gage, NO GO length, for 6.5 x 55 Swede, HG6555N , MPN: HG6555N , UPC: 757253004674 , Code: 2RJ-HSG-FRRLHSGE-HG6555N
  • Forster Rimless Headspace Gage, FIELD length, for 30, 06 Springfield, HG3006F , MPN: HG3006F , UPC: 757253004629 , Code: 2RJ-HSG-FRRLHSGE-HG3006F
  • Forster Rimless Headspace Gage, GO length, for 8mm x 57 Mauser. Used for checking the current SAAMI-specified 19 degree shoulder angle., HG8X57G , MPN: HG8X57G , UPC: 757253004698 , Code: 2RJ-HSG-FRRLHSGE-HG8X57G
  • Forster Rimless Headspace Gage, NO GO length, for 8mm x 57 Mauser, HG8X57N , MPN: HG8X57N , UPC: 757253004704 , Code: 2RJ-HSG-FRRLHSGE-HG8X57N
  • Forster Rimless Headspace Gage, NO GO length, for 280 Rem, HG0280N , MPN: HG0280N , UPC: 757253004469 , Code: 2RJ-HSG-FRRLHSGE-HG0280N
  • Forster Rimless Headspace Gage, GO length, for 284 Win, HG0284G , MPN: HG0284G , UPC: 757253004483 , Code: 2RJ-HSG-FRRLHSGE-HG0284G
  • Forster Rimless Headspace Gage, FIELD length, for 257 Roberts, HG0257F , MPN: HG0257F , UPC: 757253004414 , Code: 2RJ-HSG-FRRLHSGE-HG0257F
  • Forster Rimless Headspace Gage, NO GO length, for 30, 06 Springfield, HG3006N , MPN: HG3006N , UPC: 757253004643 , Code: 2RJ-HSG-FRRLHSGE-HG3006N
  • Forster Rimless Headspace Gage, NO GO length, for 222 Rem, HG0222N , MPN: HG0222N , UPC: 757253004278 , Code: 2RJ-HSG-FRRLHSGE-HG0222N
  • Forster Rimless Headspace Gage, NO GO length, for 22 PPC, HG0PPCN , MPN: HG0PPCN , UPC: 757253004520 , Code: 2RJ-HSG-FRRLHSGE-HG0PPCN
  • Forster Rimless Headspace Gage, GO length, for 6.5 SKAN, HGSKANG , MPN: HGSKANG , UPC: 757253004711 , Code: 2RJ-HSG-FRRLHSGE-HGSKANG
  • Forster Rimless Headspace Gage, GO length, for 222 Rem Mag, HG222MG , MPN: HG222MG , UPC: 757253004575 , Code: 2RJ-HSG-FRRLHSGE-HG222MG
  • Forster Rimless Headspace Gage, NO GO length, for 222 Rem Mag, HG222MN , MPN: HG222MN , UPC: 757253004582 , Code: 2RJ-HSG-FRRLHSGE-HG222MN
  • Forster Rimless Headspace Gage, GO length, for 244 Rem, HG0244G , MPN: HG0244G , UPC: 757253004360 , Code: 2RJ-HSG-FRRLHSGE-HG0244G
  • Forster Rimless Headspace Gage, NO GO length, for 220 Swift, HG0220N , MPN: HG0220N , UPC: 757253004247 , Code: 2RJ-HSG-FRRLHSGE-HG0220N
  • Forster Rimless Headspace Gage, FIELD length, for 222 Rem Mag, HG222MF , MPN: HG222MF , UPC: 757253004568 , Code: 2RJ-HSG-FRRLHSGE-HG222MF
  • Forster Rimless Headspace Gage, GO length, for 280 Rem, HG0280G , MPN: HG0280G , UPC: 757253004452 , Code: 2RJ-HSG-FRRLHSGE-HG0280G
  • Forster Rimless Headspace Gage, NO GO length, for 204 Ruger, HG0204N , MPN: HG0204N , UPC: 757253992179 , Code: 2RJ-HSG-FRRLHSGE-HG0204N
  • Forster Rimless Headspace Gage, FIELD length, for 6.5 x 55 Swede, HG6555F , MPN: HG6555F , UPC: 757253004650 , Code: 2RJ-HSG-FRRLHSGE-HG6555F
  • Forster Rimless Headspace Gage, NO GO length, for 244 Rem, HG0244N , MPN: HG0244N , UPC: 757253004377 , Code: 2RJ-HSG-FRRLHSGE-HG0244N
  • Forster Rimless Headspace Gage, GO length, for 6.5 x 55 Swede, HG6555G , MPN: HG6555G , UPC: 757253004667 , Code: 2RJ-HSG-FRRLHSGE-HG6555G
  • Forster Rimless Headspace Gage, NO GO length, 284 Win, HG0284N , MPN: HG0284N , UPC: 757253004490 , Code: 2RJ-HSG-FRRLHSGE-HG0284N
  • Forster Rimless Headspace Gage, GO length, for 22 PPC, HG0PPCG , MPN: HG0PPCG , UPC: 757253004513 , Code: 2RJ-HSG-FRRLHSGE-HG0PPCG
  • Forster Rimless Headspace Gage, NO GO length, for 257 Roberts, HG0257N , MPN: HG0257N , UPC: 757253004438 , Code: 2RJ-HSG-FRRLHSGE-HG0257N
  • Forster Rimless Headspace Gage, NO GO length, for 30 Carbine, HG0030N , MPN: HG0030N , UPC: 757253004216 , Code: 2RJ-HSG-FRRLHSGE-HG0030N
  • Forster Rimless Headspace Gage, GO length, for 220 Swift, HG0220G , MPN: HG0220G , UPC: 757253004230 , Code: 2RJ-HSG-FRRLHSGE-HG0220G
  • Forster Rimless Headspace Gage, FIELD length, for 222 Rem, HG0222F , MPN: HG0222F , UPC: 757253004254 , Code: 2RJ-HSG-FRRLHSGE-HG0222F
  • Forster Rimless Headspace Gage, FIELD length, for 284 Win, HG0284F , MPN: HG0284F , UPC: 757253004476 , Code: 2RJ-HSG-FRRLHSGE-HG0284F
  • Forster Rimless Headspace Gage, FIELD length, for 244 Rem, HG0244F , MPN: HG0244F , UPC: 757253004353 , Code: 2RJ-HSG-FRRLHSGE-HG0244F
  • Forster Rimless Headspace Gage, FIELD length, for 280 Rem, HG0280F , MPN: HG0280F , UPC: 757253004445 , Code: 2RJ-HSG-FRRLHSGE-HG0280F
  • Forster Rimless Headspace Gage, FIELD length, for 22 PPC, HG0PPCF , MPN: HG0PPCF , UPC: 757253004506 , Code: 2RJ-HSG-FRRLHSGE-HG0PPCF
  • Forster Rimless Headspace Gage, FIELD length, for 204 Ruger, HG0204F , MPN: HG0204F , UPC: 757253992162 , Code: 2RJ-HSG-FRRLHSGE-HG0204F
  • Forster Rimless Headspace Gage, GO length, for 204 Ruger, HG0204G , MPN: HG0204G , UPC: 757253992186 , Code: 2RJ-HSG-FRRLHSGE-HG0204G
  • Forster Rimless Headspace Gage, FIELD length, 220 Swift, HG0220F , MPN: HG0220F , UPC: 757253004223 , Code: 2RJ-HSG-FRRLHSGE-HG0220F
  • Forster Rimless Headspace Gage, Field length, for 8mm x 57 Mauser, HG8X57F , MPN: HG8X57F , UPC: 757253004681 , Code: 2RJ-HSG-FRRLHSGE-HG8X57F

Forster Rimmed & Belted Headspace Gage Unavailable & Discontinued Models

List of Unorderable Models

  • Forster Rimless Headspace Gage, NO GO length, for 6.5 SKAN, HGSKANN , MPN: HGSKANN , UPC: 757253004728 , Code: 2RJ-HSG-FRRLHSGE-HGSKANN
  • Forster Rimless Headspace Gage, GO length, for 222 Rem, HG0222G , MPN: HG0222G , UPC: 757253004261 , Code: 2RJ-HSG-FRRLHSGE-HG0222G
  • Forster Rimmed & Belted Headspace Gage, .350 Legend, FIELD Length, HG350LF , MPN: HG350LF , Code: 2RJ-HSG-FRRLHSGE-HG350LF
Compare (0)
1 item has been added
Add at least two items to compare