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Inserts & Collars

CNC-machined titanium and 416 stainless steel inserts engineered for precision. All components accept screw-in backweights for customizable FOC tuning. Made in Montana.

11 Products 4mm – 6.5mm Shaft Sizes Titanium & Stainless Steel

Titanium

Premium

Lightweight yet incredibly strong. Our CNC-machined titanium inserts offer excellent strength-to-weight performance for archers who want premium durability without unnecessary weight.

Stainless Steel

416 stainless steel, heat treated for hardened gun barrel-grade toughness. Exceptional strength and corrosion resistance at an outstanding value.

Internal Inserts

Internal inserts designed to pair with CMI Collars for a secure, concentric assembly. Available in 4mm Deep-6 with 6-40 threading and 5mm with standard 8-32 threading.

Collars

Precision-machined 416 stainless steel collars with a consistent 25-grain weight and multiple ID options to fit your exact shaft OD. Designed to pair with internal HIT inserts.

Insert Guide

Which Insert Is Right For You?

Choosing the right insert depends on your shaft size, desired FOC, and whether you need an internal (HIT) or standard insert.

Titanium Inserts

Lightweight yet incredibly strong. Titanium inserts offer the best strength-to-weight ratio, ideal for archers who want maximum durability without adding unnecessary weight.

  • 50 grain weight
  • 4mm, 4.5mm, 5mm sizes
  • Accepts screw-in backweights
  • Best for: Tournament & hunting

Stainless Steel Inserts

416 stainless steel, heat treated for hardened toughness. Excellent value with exceptional strength and corrosion resistance.

  • 25–100 grain options
  • 4mm – 6.5mm sizes
  • Accepts screw-in backweights
  • Best for: All-around performance

Internal Inserts (HIT)

Internal inserts designed to pair with CMI Collars for a secure, concentric assembly. Available in 4mm Deep-6 and 5mm configurations.

  • 25 or 50 grain options
  • 4mm Deep-6 & 5mm sizes
  • Pairs with CMI Collar
  • Best for: Maximum concentricity

Collars

Precision-machined stainless steel collars with multiple ID options to fit your exact shaft OD. Designed to pair with internal HIT inserts.

  • 25 grain weight
  • 7+ ID options per size
  • .233" - .282" ID range
  • Best for: Custom shaft fitting

Reference

Compatibility Chart

Compare all inserts and collars side by side to find the right fit for your setup.

Product Material Shaft Size Weight Backweight Price
5MM Titanium Halfout Titanium 5mm / .204in 50gr ✓ Yes $43.99
4MM Titanium Outsert Titanium 4mm / .166in 50gr ✓ Yes $43.99
4.5MM Titanium Outsert Titanium 4.5mm / .177in 50gr ✓ Yes $43.99
5MM Stainless Steel Halfout 416 Stainless 5mm / .204in 50gr ✓ Yes $24.99
4MM Stainless Steel Outsert 416 Stainless 4mm / .166in 75gr ✓ Yes $24.99
6MM Stainless Steel Insert 416 Stainless 6mm / .232in 50gr ✓ Yes $19.99
6.5MM Stainless Steel Insert 416 Stainless 6.5mm / .244–.246in 50gr ✓ Yes $19.99
6.5MM Stainless Steel Insert 416 Stainless 6.5mm / .244–.246in 100gr ✓ Yes $19.99
4MM Deep-6 Internal Inserts (HIT) 416 Stainless 4mm Deep-6 / .166in 25gr ✓ Yes $12.99
5MM Internal Insert (HIT) 416 Stainless 5mm / .204in 25-50gr ✓ Yes $19.99
5/16" 5MM Collar 416 Stainless 5mm / .204in 25gr ✓ Yes $11.99
5/16" 4MM Collar 416 Stainless 4mm / .166in 25gr ✓ Yes $11.99

5MM Titanium Halfout

$43.99
Material Titanium
Shaft Size 5mm / .204in
Weight 50gr
Backweight ✓ Yes

4MM Titanium Outsert

$43.99
Material Titanium
Shaft Size 4mm / .166in
Weight 50gr
Backweight ✓ Yes

4.5MM Titanium Outsert

$43.99
Material Titanium
Shaft Size 4.5mm / .177in
Weight 50gr
Backweight ✓ Yes

5MM Stainless Steel Halfout

$24.99
Material 416 Stainless
Shaft Size 5mm / .204in
Weight 50gr
Backweight ✓ Yes

4MM Stainless Steel Outsert

$24.99
Material 416 Stainless
Shaft Size 4mm / .166in
Weight 75gr
Backweight ✓ Yes

6MM Stainless Steel Insert

$19.99
Material 416 Stainless
Shaft Size 6mm / .232in
Weight 50gr
Backweight ✓ Yes

6.5MM Stainless Steel Insert

$19.99
Material 416 Stainless
Shaft Size 6.5mm / .244–.246in
Weight 50gr
Backweight ✓ Yes

6.5MM Stainless Steel Insert

$19.99
Material 416 Stainless
Shaft Size 6.5mm / .244–.246in
Weight 100gr
Backweight ✓ Yes

4MM Deep-6 Internal Inserts (HIT)

$12.99
Material 416 Stainless
Shaft Size 4mm Deep-6 / .166in
Weight 25gr
Backweight ✓ Yes

5MM Internal Insert (HIT)

$19.99
Material 416 Stainless
Shaft Size 5mm / .204in
Weight 25-50gr
Backweight ✓ Yes

5/16" 5MM Collar

$11.99
Material 416 Stainless
Shaft Size 5mm / .204in
Weight 25gr
Backweight ✓ Yes

5/16" 4MM Collar

$11.99
Material 416 Stainless
Shaft Size 4mm / .166in
Weight 25gr
Backweight ✓ Yes